tegra: video: support eDP displays on Tegra124 devices

Connect up the clocks and the eDP driver to make these displays work with
Tegra124-based devices.

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/Kconfig b/drivers/video/Kconfig
index 62af63a..2544301 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -95,3 +95,11 @@
 	   eDP (Embedded DisplayPort) is a standard widely used in laptops
 	   to drive LCD panels. This framework provides support for enabling
 	   these displays where supported by the video hardware.
+
+config VIDEO_TEGRA124
+	bool "Enable video support on Tegra124"
+	help
+	   Tegra124 supports many video output options including eDP and
+	   HDMI. At present only eDP is supported by U-Boot. This option
+	   enables this support which can be used on devices which
+	   have an eDP display connected.