mcx: add Ethernet over USB

Signed-off-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/configs/mcx.h

@@ -111,6 +111,9 @@
 #define CONFIG_USB_ULPI_VIEWPORT_OMAP
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO	57
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
+#define	CONFIG_USB_HOST_ETHER
+#define	CONFIG_USB_ETHER_ASIX
+#define CONFIG_USB_ETHER_MCS7830
 
 /* commands to include */
 #define CONFIG_CMD_EXT2		/* EXT2 Support			*/