ARM: dts: sun7i: Add USB Dual Role Controller

Add a node for the otg/drc usb controller to sun7i-a20.dtsi
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun7i-a20.dtsi

@@ -699,6 +699,19 @@
 			#size-cells = <0>;
 		};
 
+		usb_otg: usb@01c13000 {
+			compatible = "allwinner,sun4i-a10-musb";
+			reg = <0x01c13000 0x0400>;
+			clocks = <&ahb_gates 0>;
+			interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "mc";
+			phys = <&usbphy 0>;
+			phy-names = "usb";
+			extcon = <&usbphy 0>;
+			allwinner,sram = <&otg_sram 1>;
+			status = "disabled";
+		};
+
 		usbphy: phy@01c13400 {
 			#phy-cells = <1>;
 			compatible = "allwinner,sun7i-a20-usb-phy";