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>
diff --git a/configs/p2771-0000-500_defconfig b/configs/p2771-0000-500_defconfig
index baeb8f3..79f4808 100644
--- a/configs/p2771-0000-500_defconfig
+++ b/configs/p2771-0000-500_defconfig
@@ -30,6 +30,7 @@
 # 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