arm64: dts: rockchip: Enable USB3 for rk3328 Rock Pi E

Enable USB3 nodes for the Rock Pi E board.

The VBUS regulator device node was added when the board was first
introduced.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20210504083616.9654-4-wens@kernel.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts

@@ -382,6 +382,11 @@ &uart2 {
 	status = "okay";
 };
 
+&usbdrd3 {
+	dr_mode = "host";
+	status = "okay";
+};
+
 &usb_host0_ehci {
 	status = "okay";
 };