Add ethernet0 alias in Nanopi NEO's device tree

This syncs the sun8i-h3-nanopi-neo.dts from the Linux tree, from tag
v5.18-rc1.
The alias is required to enable automatic MAC address generation.

Signed-off-by: Baltazár Radics <baltazar.radics@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/arch/arm/dts/sun8i-h3-nanopi-neo.dts b/arch/arm/dts/sun8i-h3-nanopi-neo.dts
index 9f33f6f..df71fab 100644
--- a/arch/arm/dts/sun8i-h3-nanopi-neo.dts
+++ b/arch/arm/dts/sun8i-h3-nanopi-neo.dts
@@ -45,6 +45,10 @@
 / {
 	model = "FriendlyARM NanoPi NEO";
 	compatible = "friendlyarm,nanopi-neo", "allwinner,sun8i-h3";
+
+	aliases {
+		ethernet0 = &emac;
+	};
 };
 
 &ehci0 {