sunxi: dts: OrangePi Zero: add Ethernet node

The OrangePi Zero can happily use the EMAC along with its integrated
PHY to use Ethernet (for TFTP booting, for instance).
Add the emac node to the board .dts by copying it from the OrangePi One
DT.
Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: NJagan Teki <jagan@openedev.com>

arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts

@@ -99,6 +99,17 @@
 	status = "okay";
 };
 
+&emac {
+	phy = <&phy1>;
+	phy-mode = "mii";
+	allwinner,use-internal-phy;
+	allwinner,leds-active-low;
+	status = "okay";
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
+
 &mmc0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc0_pins_a>;