arm64: zynqmp: Add missing alias for gem0 for ep108

Add missing alias for gem0 for ep108 to have proper sequence number.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynqmp-ep108.dts b/arch/arm/dts/zynqmp-ep108.dts
index 9f6b111..a527f90 100644
--- a/arch/arm/dts/zynqmp-ep108.dts
+++ b/arch/arm/dts/zynqmp-ep108.dts
@@ -17,6 +17,7 @@
 	model = "ZynqMP EP108";
 
 	aliases {
+		ethernet0 = &gem0;
 		mmc0 = &sdhci0;
 		mmc1 = &sdhci1;
 		serial0 = &uart0;