mx28evk: Add USB Mass Storage support

Select the USB options to allow running "ums 0 mmc 0".

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/configs/mx28evk_defconfig b/configs/mx28evk_defconfig
index df0ccea..4058d08 100644
--- a/configs/mx28evk_defconfig
+++ b/configs/mx28evk_defconfig
@@ -32,6 +32,7 @@
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_NAND_TRIMFFS=y
+CONFIG_CMD_USB_MASS_STORAGE=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_DATE=y
 CONFIG_CMD_EXT4=y
@@ -65,3 +66,11 @@
 CONFIG_DM_SERIAL=y
 CONFIG_SPI=y
 CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_MAX_CONTROLLER_COUNT=2
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="FSL"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0525
+CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
+CONFIG_CI_UDC=y
+CONFIG_USB_GADGET_DOWNLOAD=y