Added sys_12v regulator for header supplied voltage

Additionally switched all outputs from dc_12v to it to allow
booting of the boards without USB-C.

Signed-off-by: Piotr Szczepanik <piter75@gmail.com>

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts
index 2acb3d500..5a7a5dab3 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts
@@ -22,7 +22,7 @@
 		regulator-boot-on;
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
-		vin-supply = <&dc_12v>;
+		vin-supply = <&sys_12v>;
 	};
 
 	vcc3v3_pcie: vcc3v3-pcie {
@@ -34,7 +34,7 @@
 		pinctrl-0 = <&vcc3v3_pcie_en>;
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
-		vin-supply = <&dc_12v>;
+		vin-supply = <&sys_12v>;
 	};
 };
 
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
index 057c938be..40c25e6f6 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
@@ -101,6 +101,15 @@
 		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
 	};
 
+	sys_12v: sys_12v {
+		compatible = "regulator-fixed";
+		regulator-name = "sys_12v";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+	};
+
 	vcc_vbus_typec0: vcc-vbus-typec0 {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc_vbus_typec0";
@@ -141,7 +150,7 @@
 		regulator-boot-on;
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
-		vin-supply = <&dc_12v>;
+		vin-supply = <&sys_12v>;
 	};
 
 	vcca_0v9: vcca-0v9 {
@@ -186,7 +195,7 @@
 		regulator-boot-on;
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
-		vin-supply = <&dc_12v>;
+		vin-supply = <&sys_12v>;
 	};
 
 	vdd_log: vdd-log {
-- 
2.17.1