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>

board/warp7/warp7.c

@@ -19,6 +19,7 @@
 #include <mmc.h>
 #include <asm/arch/crm_regs.h>
 #include <usb.h>
+#include <netdev.h>
 #include <power/pmic.h>
 #include <power/pfuze3000_pmic.h>
 #include "../freescale/common/pfuze.h"
@@ -138,6 +139,19 @@ int power_init_board(void)
 }
 #endif
 
+int board_eth_init(bd_t *bis)
+{
+	int ret = 0;
+
+#ifdef CONFIG_USB_ETHER
+	ret = usb_eth_initialize(bis);
+	if (ret < 0)
+		printf("Error %d registering USB ether.\n", ret);
+#endif
+
+	return ret;
+}
+
 int board_init(void)
 {
 	/* address of boot parameters */

configs/warp7_defconfig

@@ -35,3 +35,8 @@ CONFIG_G_DNL_MANUFACTURER="FSL"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+
+CONFIG_CMD_NET=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_CMD_DHCP=y
+

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