ARM: tegra: colibri_t20: add missing regulators

Add missing regulators:
- reg_lan_v_bus being USB Ethernet chip vbus supply
- carrier board reg_3v3 to be used as backlight and panel power supply
- carrier board HDMI supply being reg_5v0
- reg_usbc_vbus being the USB vbus supply of the EHCI instance 0
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra20-colibri-iris.dts

@@ -23,6 +23,7 @@ chosen {
 	host1x@50000000 {
 		hdmi@54280000 {
 			status = "okay";
+			hdmi-supply = <&reg_5v0>;
 		};
 	};
 
@@ -88,6 +89,7 @@ usb@c5000000 {
 
 	usb-phy@c5000000 {
 		status = "okay";
+		vbus-supply = <&reg_usbc_vbus>;
 	};
 
 	usb@c5008000 {
@@ -96,6 +98,7 @@ usb@c5008000 {
 
 	usb-phy@c5008000 {
 		status = "okay";
+		vbus-supply = <&reg_usbh_vbus>;
 	};
 
 	sdhci@c8000600 {
@@ -104,14 +107,35 @@ sdhci@c8000600 {
 		no-1-8-v;
 	};
 
+	reg_3v3: regulator-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	reg_5v0: regulator-5v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	reg_usbc_vbus: regulator-usbc-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "VCC_USB2";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&reg_5v0>;
+	};
+
 	/* USBH_PEN resp. USB_P_EN */
 	reg_usbh_vbus: regulator-usbh-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "VCC_USB1";
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
-		regulator-boot-on;
-		regulator-always-on;
 		gpio = <&gpio TEGRA_GPIO(W, 2) GPIO_ACTIVE_LOW>;
+		vin-supply = <&reg_5v0>;
 	};
 };

arch/arm/boot/dts/tegra20-colibri.dtsi

@@ -471,6 +471,7 @@ usb-phy@c5004000 {
 		status = "okay";
 		nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 1)
 			GPIO_ACTIVE_LOW>;
+		vbus-supply = <&reg_lan_v_bus>;
 	};
 
 	sdhci@c8000600 {