ARM: imx7s-warp: enable USB gadget ethernet

Enable USB gadget ethernet by default to have networking capabilities.

Tested using DHCP and TFTP to transfer kernel, DT, ramdisk.

Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
diff --git a/include/configs/warp7.h b/include/configs/warp7.h
index d3b0c5e..f4a9231 100644
--- a/include/configs/warp7.h
+++ b/include/configs/warp7.h
@@ -38,6 +38,7 @@
 	"script=boot.scr\0" \
 	"image=zImage\0" \
 	"console=ttymxc0\0" \
+	"ethact=usb_ether\0" \
 	"fdt_high=0xffffffff\0" \
 	"initrd_high=0xffffffff\0" \
 	"fdt_file=imx7s-warp.dtb\0" \
@@ -145,4 +146,10 @@
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE	SZ_16M
 #define DFU_DEFAULT_POLL_TIMEOUT	300
 
+#define CONFIG_USB_ETHER
+#define CONFIG_USB_ETH_CDC
+#define CONFIG_USB_ETH_RNDIS
+#define CONFIG_USBNET_HOST_ADDR		"de:ad:be:af:00:00"
+#define CONFIG_USBNET_DEV_ADDR		"de:ad:be:af:00:01"
+
 #endif