ARM: tegra: enable Ethernet on p2771-0000

Enable the Ethernet device in DT, provide board-specific configuration,
and enable the driver in Kconfig.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

arch/arm/dts/tegra186-p2771-0000.dtsi

@@ -25,6 +25,11 @@
 		reg = <0x0 0x80000000 0x0 0x60000000>;
 	};
 
+	ethernet@2490000 {
+		status = "okay";
+		phy-reset-gpios = <&gpio_main TEGRA_MAIN_GPIO(M, 4) GPIO_ACTIVE_LOW>;
+	};
+
 	i2c@3160000 {
 		status = "okay";
 	};

configs/p2771-0000-000_defconfig

@@ -30,6 +30,7 @@ CONFIG_CMD_FS_GENERIC=y
 # CONFIG_BLK is not set
 CONFIG_TEGRA186_BPMP_I2C=y
 # CONFIG_DM_MMC_OPS is not set
+CONFIG_DWC_ETH_QOS=y
 CONFIG_E1000=y
 CONFIG_RTL8169=y
 CONFIG_PCI=y

configs/p2771-0000-500_defconfig

@@ -30,6 +30,7 @@ CONFIG_CMD_FS_GENERIC=y
 # CONFIG_BLK is not set
 CONFIG_TEGRA186_BPMP_I2C=y
 # CONFIG_DM_MMC_OPS is not set
+CONFIG_DWC_ETH_QOS=y
 CONFIG_E1000=y
 CONFIG_RTL8169=y
 CONFIG_PCI=y