ARM: dts: socfpga: Add second ethernet alias to VINING FPGA

Add DT alias for the second ethernet present on mainboard rev 1.10.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

arch/arm/boot/dts/socfpga_cyclone5_vining_fpga.dts

@@ -69,6 +69,7 @@
 		 * to be added to the gmac1 device tree blob.
 		 */
 		ethernet0 = &gmac1;
+		ethernet1 = &gmac0;
 	};
 
 	gpio-keys {