arm64: dts: qcom: sc7180: Configure USB as wakeup source

The dwc3 USB controller of the sc7180 supports USB remote
wakeup, configure it as a wakeup source.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220901102946.v2.1.I347ea409ee3134bd32a29e33fecd1a6ef32085a0@changeid

arch/arm64/boot/dts/qcom/sc7180.dtsi

@@ -2784,6 +2784,8 @@ usb_1: usb@a6f8800 {
 					<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_USB3 0>;
 			interconnect-names = "usb-ddr", "apps-usb";
 
+			wakeup-source;
+
 			usb_1_dwc3: usb@a600000 {
 				compatible = "snps,dwc3";
 				reg = <0 0x0a600000 0 0xe000>;