arm64: tegra: Mark Jetson Xavier NX's PHY as a wakeup source

Mark the RTL8211F PHY as a wakeup source for the Jetson Xavier NX.
This allows the reworked RTL8211F driver to know that the PHY is
wired to wakeup capable hardware, and thus to expose WoL capabilities.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Author: Russell King (Oracle)

arch/arm64/boot/dts/nvidia/tegra194-p3668.dtsi

@@ -42,6 +42,7 @@
 					interrupt-parent = <&gpio>;
 					interrupts = <TEGRA194_MAIN_GPIO(G, 4) IRQ_TYPE_LEVEL_LOW>;
 					#phy-cells = <0>;
+					wakeup-source;
 				};
 			};
 		};