rockchip: dts: rk3229: add dwc2 node for fastboot

Add dwc2 node for fastboot to init dwc2 controller.

Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/dts/rk3229-evb.dts

@@ -75,3 +75,7 @@
 &uart2 {
 	status = "okay";
 };
+
+&usb20_otg {
+       status = "okay";
+};

arch/arm/dts/rk322x.dtsi

@@ -403,6 +403,16 @@
 		status = "disabled";
 	};
 
+	usb20_otg: usb@30040000 {
+		compatible = "rockchip,rk3229-usb", "rockchip,rk3288-usb",
+			     "snps,dwc2";
+		reg = <0x30040000 0x40000>;
+		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
+		hnp-srp-disable;
+		dr_mode = "otg";
+		status = "disabled";
+	};
+
 	gmac: ethernet@30200000 {
 		compatible = "rockchip,rk3228-gmac";
 		reg = <0x30200000 0x10000>;