rockchip: dts: rk3328: support and enable dwc2

Enable dwc2 controller and add fixed regulator for dwc2 controller to
control vbus.

Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/arch/arm/dts/rk3328-evb.dts b/arch/arm/dts/rk3328-evb.dts
index 4cf6d2e..220d0ab 100644
--- a/arch/arm/dts/rk3328-evb.dts
+++ b/arch/arm/dts/rk3328-evb.dts
@@ -15,6 +15,15 @@
 		stdout-path = &uart2;
 	};
 
+	vcc5v0_otg: vcc5v0-otg-drv {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		regulator-name = "vcc5v0_otg";
+		gpio = <&gpio0 27 GPIO_ACTIVE_HIGH>;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
 	vcc5v0_host_xhci: vcc5v0-host-xhci-drv {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -61,6 +70,11 @@
 	status = "okay";
 };
 
+&usb20_otg {
+	vbus-supply = <&vcc5v0_otg>;
+	status = "okay";
+};
+
 &usb_host0_xhci {
 	vbus-supply = <&vcc5v0_host_xhci>;
 	status = "okay";