arm64: allwinner: a64: add Ethernet PHY regulator for several boards

On several A64 boards the Ethernet PHY is powered by the DC1SW regulator
on the AXP803 PMIC.

Add phy-handle property to these boards' emac node.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Corentin LABBE <clabbe.montjoie@gmail.com>
Tested-by: Corentin LABBE <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts

@@ -75,6 +75,7 @@ &emac {
 	pinctrl-0 = <&rgmii_pins>;
 	phy-mode = "rgmii";
 	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_dc1sw>;
 	status = "okay";
 };
 

arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts

@@ -77,6 +77,7 @@ &emac {
 	pinctrl-0 = <&rmii_pins>;
 	phy-mode = "rmii";
 	phy-handle = <&ext_rmii_phy1>;
+	phy-supply = <&reg_dc1sw>;
 	status = "okay";
 
 };

arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts

@@ -82,6 +82,7 @@ &emac {
 	pinctrl-0 = <&rgmii_pins>;
 	phy-mode = "rgmii";
 	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_dc1sw>;
 	status = "okay";
 };