ARM: atmel: sama5d4ek: enable usb ethernet gadget

Signed-off-by: NBo Shen <voice.shen@atmel.com>

include/configs/sama5d4ek.h

@@ -121,6 +121,14 @@
 #define CONFIG_USB_STORAGE
 #endif
 
+/* USB device */
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_USB_GADGET_ATMEL_USBA
+#define CONFIG_USB_ETHER
+#define CONFIG_USB_ETH_RNDIS
+#define CONFIG_USBNET_MANUFACTURER      "Atmel SAMA5D4EK"
+
 #if defined(CONFIG_CMD_USB) || defined(CONFIG_CMD_MMC)
 #define CONFIG_CMD_FAT
 #define CONFIG_DOS_PARTITION