usb: USB download gadget and functions config options coherent naming

This introduces a coherent scheme for naming USB download gadget and functions
config options. The download USB gadget config option is moved to
CONFIG_USB_GADGET_DOWNLOAD for better consistency with other gadgets and each
function's config option is moved to a CONFIG_USB_FUNCTION_ prefix.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>

Test HW: Odroid_XU3 (Exynos5422), trats (Exynos4210)
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 035c156..7fd8cf7 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -287,7 +287,7 @@
 #define CONFIG_MUSB_PIO_ONLY
 #define CONFIG_MUSB_DISABLE_BULK_COMBINE_SPLIT
 #define CONFIG_USB_GADGET
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 #define CONFIG_MUSB_HOST
@@ -344,7 +344,7 @@
 
 /* USB Device Firmware Update support */
 #ifndef CONFIG_SPL_BUILD
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_CMD_DFU
 #define DFU_ALT_INFO_MMC \
diff --git a/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h
index ccdfb9c..b43489d 100644
--- a/include/configs/am43xx_evm.h
+++ b/include/configs/am43xx_evm.h
@@ -128,7 +128,7 @@
 #define CONFIG_USB_DWC3_GADGET
 
 #define CONFIG_USB_GADGET
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_VBUS_DRAW 2
 #define CONFIG_G_DNL_MANUFACTURER "Texas Instruments"
 #define CONFIG_G_DNL_VENDOR_NUM 0x0403
@@ -138,7 +138,7 @@
 
 #ifndef CONFIG_SPL_BUILD
 /* USB Device Firmware Update support */
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_RAM
 #define CONFIG_CMD_DFU
 
diff --git a/include/configs/bav335x.h b/include/configs/bav335x.h
index 741fb05..b53c49e 100644
--- a/include/configs/bav335x.h
+++ b/include/configs/bav335x.h
@@ -444,7 +444,7 @@
 #define CONFIG_MUSB_PIO_ONLY
 #define CONFIG_MUSB_DISABLE_BULK_COMBINE_SPLIT
 #define CONFIG_USB_GADGET
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 #define CONFIG_MUSB_HOST
@@ -472,7 +472,7 @@
 
 #ifdef CONFIG_MUSB_GADGET
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 
 /* USB TI's IDs */
 #define CONFIG_G_DNL_VENDOR_NUM 0x0451
@@ -494,7 +494,7 @@
 
 /* USB Device Firmware Update support */
 #ifndef CONFIG_SPL_BUILD
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_CMD_DFU
 #define DFU_ALT_INFO_MMC \
diff --git a/include/configs/colibri_vf.h b/include/configs/colibri_vf.h
index f2f8e2e..ab8d293 100644
--- a/include/configs/colibri_vf.h
+++ b/include/configs/colibri_vf.h
@@ -257,16 +257,16 @@
 #define CONFIG_G_DNL_PRODUCT_NUM         CONFIG_TRDX_PID_COLIBRI_VF50
 
 /* USB DFU */
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_CMD_DFU
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_NAND
 #define CONFIG_DFU_MMC
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE (1024 * 1024)
 
 /* USB Storage */
 #define CONFIG_USB_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 #define CONFIG_CMD_USB_MASS_STORAGE
 
 /* Enable SPI support */
diff --git a/include/configs/dra7xx_evm.h b/include/configs/dra7xx_evm.h
index 0323c72..b969944 100644
--- a/include/configs/dra7xx_evm.h
+++ b/include/configs/dra7xx_evm.h
@@ -190,7 +190,7 @@
 #define CONFIG_USB_DWC3_GADGET
 
 #define CONFIG_USB_GADGET
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_VBUS_DRAW 2
 #define CONFIG_G_DNL_MANUFACTURER "Texas Instruments"
 #define CONFIG_G_DNL_VENDOR_NUM 0x0451
@@ -198,7 +198,7 @@
 #define CONFIG_USB_GADGET_DUALSPEED
 
 /* USB Device Firmware Update support */
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_RAM
 #define CONFIG_CMD_DFU
 
diff --git a/include/configs/exynos4-common.h b/include/configs/exynos4-common.h
index 08e2009..ec1f882 100644
--- a/include/configs/exynos4-common.h
+++ b/include/configs/exynos4-common.h
@@ -28,13 +28,13 @@
 #define CONFIG_CMD_GPT
 
 /* USB Composite download gadget - g_dnl */
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 
 /* TIZEN THOR downloader support */
 #define CONFIG_CMD_THOR_DOWNLOAD
-#define CONFIG_THOR_FUNCTION
+#define CONFIG_USB_FUNCTION_THOR
 
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE SZ_32M
 #define DFU_DEFAULT_POLL_TIMEOUT 300
@@ -57,7 +57,7 @@
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 
 /* Common environment variables */
 #define CONFIG_EXTRA_ENV_ITB \
diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h
index 902ec2c..2cbd5e0 100644
--- a/include/configs/gw_ventana.h
+++ b/include/configs/gw_ventana.h
@@ -205,8 +205,8 @@
 /* USB Mass Storage Gadget */
 #define CONFIG_USB_GADGET
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_VBUS_DRAW    2
 
 /* Netchip IDs */
diff --git a/include/configs/mx6sabre_common.h b/include/configs/mx6sabre_common.h
index 6c3c52e..47a37f4 100644
--- a/include/configs/mx6sabre_common.h
+++ b/include/configs/mx6sabre_common.h
@@ -217,8 +217,8 @@
 
 #define CONFIG_USB_GADGET
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 
 #define CONFIG_G_DNL_VENDOR_NUM		0x0525
diff --git a/include/configs/nitrogen6x.h b/include/configs/nitrogen6x.h
index 67a3c97..231da72 100644
--- a/include/configs/nitrogen6x.h
+++ b/include/configs/nitrogen6x.h
@@ -337,8 +337,8 @@
 
 #define CONFIG_USB_GADGET
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 
 /* Netchip IDs */
diff --git a/include/configs/odroid_xu3.h b/include/configs/odroid_xu3.h
index cf17f3d..8d5c736 100644
--- a/include/configs/odroid_xu3.h
+++ b/include/configs/odroid_xu3.h
@@ -60,10 +60,10 @@
 #define CONFIG_G_DNL_VENDOR_NUM		0x04E8
 #define CONFIG_G_DNL_PRODUCT_NUM	0x6601
 #define CONFIG_G_DNL_MANUFACTURER	"Samsung"
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 
 /* DFU */
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_CMD_DFU
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE	SZ_32M
@@ -72,13 +72,13 @@
 /* THOR */
 #define CONFIG_G_DNL_THOR_VENDOR_NUM	CONFIG_G_DNL_VENDOR_NUM
 #define CONFIG_G_DNL_THOR_PRODUCT_NUM	0x685D
-#define CONFIG_THOR_FUNCTION
+#define CONFIG_USB_FUNCTION_THOR
 #define CONFIG_CMD_THOR_DOWNLOAD
 
 /* UMS */
 #define CONFIG_G_DNL_UMS_VENDOR_NUM	0x0525
 #define CONFIG_G_DNL_UMS_PRODUCT_NUM	0xA4A5
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 #define CONFIG_CMD_USB_MASS_STORAGE
 
 /* FIXME: MUST BE REMOVED AFTER TMU IS TURNED ON */
diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index e574742..8ebb5bd 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -68,7 +68,7 @@
 #define CONFIG_USB_ETHER_RNDIS
 #define CONFIG_USB_GADGET
 #define CONFIG_USB_GADGET_VBUS_DRAW	0
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_G_DNL_VENDOR_NUM		0x0451
 #define CONFIG_G_DNL_PRODUCT_NUM	0xd022
 #define CONFIG_G_DNL_MANUFACTURER	"TI"
diff --git a/include/configs/s5p_goni.h b/include/configs/s5p_goni.h
index 7994ecf..235bba5 100644
--- a/include/configs/s5p_goni.h
+++ b/include/configs/s5p_goni.h
@@ -68,15 +68,15 @@
 #define CONFIG_CMD_GPT
 
 /* USB Composite download gadget - g_dnl */
-#define CONFIG_USBDOWNLOAD_GADGET
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_GADGET_DOWNLOAD
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE SZ_32M
 #define DFU_DEFAULT_POLL_TIMEOUT 300
 
 /* TIZEN THOR downloader support */
 #define CONFIG_CMD_THOR_DOWNLOAD
-#define CONFIG_THOR_FUNCTION
+#define CONFIG_USB_FUNCTION_THOR
 
 /* USB Samsung's IDs */
 #define CONFIG_G_DNL_VENDOR_NUM 0x04E8
@@ -275,7 +275,7 @@
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW 2
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 
 #define CONFIG_OF_LIBFDT
 
diff --git a/include/configs/siemens-am33x-common.h b/include/configs/siemens-am33x-common.h
index e5fd147..f33f9b4 100644
--- a/include/configs/siemens-am33x-common.h
+++ b/include/configs/siemens-am33x-common.h
@@ -249,7 +249,7 @@
 #endif /* CONFIG_MUSB_GADGET */
 
 #define CONFIG_USB_GADGET
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 
 /* USB DRACO ID as default */
 #define CONFIG_USBD_HS
@@ -258,7 +258,7 @@
 #define CONFIG_G_DNL_MANUFACTURER "Siemens AG"
 
 /* USB Device Firmware Update support */
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_NAND
 #define CONFIG_CMD_DFU
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE	(1 << 20)
diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
index 4c3366a..e8473b8 100644
--- a/include/configs/socfpga_common.h
+++ b/include/configs/socfpga_common.h
@@ -243,10 +243,10 @@
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 
 /* USB Composite download gadget - g_dnl */
-#define CONFIG_USBDOWNLOAD_GADGET
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_GADGET_DOWNLOAD
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE	(32 * 1024 * 1024)
 #define DFU_DEFAULT_POLL_TIMEOUT	300
diff --git a/include/configs/tbs2910.h b/include/configs/tbs2910.h
index 42e5821..397c95c 100644
--- a/include/configs/tbs2910.h
+++ b/include/configs/tbs2910.h
@@ -133,10 +133,10 @@
 #define CONFIG_CI_UDC
 #define CONFIG_USBD_HS
 #define CONFIG_USB_GADGET
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW	0
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_G_DNL_VENDOR_NUM		0x0525
 #define CONFIG_G_DNL_PRODUCT_NUM	0xa4a5
 #define CONFIG_G_DNL_MANUFACTURER	"TBS"
diff --git a/include/configs/tegra-common-usb-gadget.h b/include/configs/tegra-common-usb-gadget.h
index 287460c..d70a4e7 100644
--- a/include/configs/tegra-common-usb-gadget.h
+++ b/include/configs/tegra-common-usb-gadget.h
@@ -18,12 +18,12 @@
 #define CONFIG_G_DNL_VENDOR_NUM 0x0955
 #define CONFIG_G_DNL_PRODUCT_NUM 0x701A
 #define CONFIG_G_DNL_MANUFACTURER "NVIDIA"
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DOWNLOAD
 /* USB mass storage protocol */
-#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
 #define CONFIG_CMD_USB_MASS_STORAGE
 /* DFU protocol */
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE (1 * 1024 * 1024)
 #define CONFIG_CMD_DFU
 #ifdef CONFIG_MMC
diff --git a/include/configs/warp.h b/include/configs/warp.h
index 48e2058..5a9bb33 100644
--- a/include/configs/warp.h
+++ b/include/configs/warp.h
@@ -80,8 +80,8 @@
 
 #define CONFIG_USB_GADGET
 #define CONFIG_CMD_USB_MASS_STORAGE
-#define CONFIG_USB_GADGET_MASS_STORAGE
-#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
+#define CONFIG_USB_GADGET_DOWNLOAD
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 
 #define CONFIG_G_DNL_VENDOR_NUM		0x0525
@@ -89,7 +89,7 @@
 #define CONFIG_G_DNL_MANUFACTURER	"FSL"
 
 #define CONFIG_CMD_DFU
-#define CONFIG_DFU_FUNCTION
+#define CONFIG_USB_FUNCTION_DFU
 #define CONFIG_DFU_MMC
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE SZ_16M
 #define DFU_DEFAULT_POLL_TIMEOUT 300
diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index 5526214..98bebd0 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -110,10 +110,10 @@
 # define CONFIG_CI_UDC           /* ChipIdea CI13xxx UDC */
 # define CONFIG_USB_GADGET
 # define CONFIG_USB_GADGET_DUALSPEED
-# define CONFIG_USBDOWNLOAD_GADGET
+# define CONFIG_USB_GADGET_DOWNLOAD
 # define CONFIG_SYS_DFU_DATA_BUF_SIZE	0x600000
 # define DFU_DEFAULT_POLL_TIMEOUT	300
-# define CONFIG_DFU_FUNCTION
+# define CONFIG_USB_FUNCTION_DFU
 # define CONFIG_DFU_RAM
 # define CONFIG_USB_GADGET_VBUS_DRAW	2
 # define CONFIG_G_DNL_VENDOR_NUM	0x03FD
@@ -123,7 +123,7 @@
 # define CONFIG_USB_CABLE_CHECK
 # define CONFIG_CMD_DFU
 # define CONFIG_CMD_THOR_DOWNLOAD
-# define CONFIG_THOR_FUNCTION
+# define CONFIG_USB_FUNCTION_THOR
 # define DFU_ALT_INFO_RAM \
 	"dfu_ram_info=" \
 	"set dfu_alt_info " \