usb: musb-new: CONFIG_MUSB prefix replacement with CONFIG_USB_MUSB

USB-related options are usually prefixed with CONFIG_USB and platform-specific
adaptation for the MUSB controller already have a CONFIG_USB_MUSB prefix, so
this switches all MUSB-related options to a CONFIG_USB_MUSB prefix, for
consistency.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
diff --git a/include/configs/pengwyn.h b/include/configs/pengwyn.h
index 4684ad6..ccb5dd3 100644
--- a/include/configs/pengwyn.h
+++ b/include/configs/pengwyn.h
@@ -174,26 +174,26 @@
  */
 #define CONFIG_USB_MUSB_DSPS
 #define CONFIG_ARCH_MISC_INIT
-#define CONFIG_MUSB_GADGET
-#define CONFIG_MUSB_PIO_ONLY
-#define CONFIG_MUSB_DISABLE_BULK_COMBINE_SPLIT
+#define CONFIG_USB_MUSB_GADGET
+#define CONFIG_USB_MUSB_PIO_ONLY
+#define CONFIG_USB_MUSB_DISABLE_BULK_COMBINE_SPLIT
 #define CONFIG_USB_GADGET
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
-#define CONFIG_MUSB_HOST
+#define CONFIG_USB_MUSB_HOST
 #define CONFIG_AM335X_USB0
 #define CONFIG_AM335X_USB0_MODE	MUSB_PERIPHERAL
 #define CONFIG_AM335X_USB1
 #define CONFIG_AM335X_USB1_MODE MUSB_HOST
 
-#if defined(CONFIG_MUSB_HOST)
+#if defined(CONFIG_USB_MUSB_HOST)
 #define CONFIG_CMD_USB
 #define CONFIG_USB_STORAGE
 #endif
 
 #if defined(CONFIG_SPL_BUILD)
 /* disable host part of MUSB in SPL */
-#undef CONFIG_MUSB_HOST
+#undef CONFIG_USB_MUSB_HOST
 /* Disable CPSW SPL support so we fit within the 101KiB limit. */
 #undef CONFIG_SPL_ETH_SUPPORT
 #endif