ARM: dts: rockchip: Add 12V main supply for edgeble-neu2

The Main supply volatge for Edgeble Neu2 IO board is 12V DC.

Add the 12v supply regulator for it and input to vcc5v0_sys.

Since the power regulator is part of IO board circuit, move the
regulator in IO dts file.
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Link: https://lore.kernel.org/r/20230731103518.2906147-14-jagan@edgeble.aiSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rockchip/rv1126-edgeble-neu2-io.dts

@@ -21,6 +21,25 @@ chosen {
 		stdout-path = "serial2:1500000n8";
 	};
 
+	vcc12v_dcin: vcc12v-dcin-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc12v_dcin";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+	};
+
+	vcc5v0_sys: vcc5v0-sys-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc12v_dcin>;
+	};
+
 	v3v3_sys: v3v3-sys-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "v3v3_sys";

arch/arm/boot/dts/rockchip/rv1126-edgeble-neu2.dtsi

@@ -11,15 +11,6 @@ aliases {
 		mmc0 = &emmc;
 	};
 
-	vcc5v0_sys: vcc5v0-sys-regulator {
-		compatible = "regulator-fixed";
-		regulator-name = "vcc5v0_sys";
-		regulator-always-on;
-		regulator-boot-on;
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-	};
-
 	vccio_flash: vccio-flash-regulator {
 		compatible = "regulator-fixed";
 		enable-active-high;