tegra: video: Add Embedded DisplayPort driver

This interface is used on laptop devices based on Tegra. Add a driver which
provides access to the eDP interface. The driver uses the display port
uclass.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/drivers/video/tegra124/Makefile b/drivers/video/tegra124/Makefile
index 9aa81a5..7e08ee9 100644
--- a/drivers/video/tegra124/Makefile
+++ b/drivers/video/tegra124/Makefile
@@ -4,4 +4,5 @@
 # SPDX-License-Identifier:      GPL-2.0+
 #
 
+obj-y += dp.o
 obj-y += sor.o