ARM: dts: sun8i-r40: Add "cpu-supply" node for sun8i-r40 based board

The CPU of sun8i-r40 is powered by PMIC, let's add "cpu-supply" node.
Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Tested-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220517013607.2252-2-qianfanguijin@163.com

arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts

@@ -113,6 +113,10 @@ &ahci {
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &de {
 	status = "okay";
 };

arch/arm/boot/dts/sun8i-r40-feta40i.dtsi

@@ -6,6 +6,10 @@
 
 #include "sun8i-r40.dtsi"
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &i2c0 {
 	status = "okay";
 

arch/arm/boot/dts/sun8i-t3-cqa3t-bv3.dts

@@ -88,6 +88,10 @@ &ahci {
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &de {
 	status = "okay";
 };

arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts

@@ -107,6 +107,10 @@ &ahci {
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &de {
 	status = "okay";
 };