ARM: dts: imx7d-smegw01: Pass Ethernet aliases

Pass Ethernet aliases, so that the bootloader can properly pass MAC address
to Linux.

This fixes the problem of getting a random MAC address for eth1 in Linux.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx7d-smegw01.dts

@@ -13,6 +13,8 @@ / {
 	compatible = "storopack,imx7d-smegw01", "fsl,imx7d";
 
 	aliases {
+		ethernet0 = &fec1;
+		ethernet1 = &fec2;
 		mmc0 = &usdhc1;
 		mmc1 = &usdhc3;
 		mmc2 = &usdhc2;