arm64: tegra: Enable PCIe Ethernet on P2894

The P2894 product has a Realtek r6168 PCIe ethernet adapter. Enable the
pcie port the adapter is attached to.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>

arch/arm64/boot/dts/nvidia/tegra210-p2894.dtsi

@@ -20,6 +20,20 @@
 		reg = <0x0 0x80000000 0x0 0xc0000000>;
 	};
 
+	pcie@1003000 {
+		status = "okay";
+
+		hvddio-pex-supply = <&max77620_sd3>;
+		dvddio-pex-supply = <&max77620_ldo1>;
+		vddio-pex-ctl-supply = <&max77620_sd3>;
+
+		pci@2,0 {
+			phys = <&{/padctl@7009f000/pads/pcie/lanes/pcie-0}>;
+			phy-names = "pcie-0";
+			status = "okay";
+		};
+	};
+
 	gpu@57000000 {
 		vdd-supply = <&vdd_gpu>;
 		status = "okay";