video: tegra: dp: Add eDP support

video: tegra: dp: Add eDP support

Bug 200113686

Change-Id: Ia21ad07d253026337f9590c3dc6482e005e26cd2
Signed-off-by: Animesh Kishore <ankishore@nvidia.com>
Reviewed-on: http://git-master/r/767154
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mitch Luban <mluban@nvidia.com>
(cherry picked from commit e4a90cb18ca3033b33645235fff83bd2d5fe0a83)
Reviewed-on: http://git-master/r/781172
Reviewed-by: Shu Zhong <shuz@nvidia.com>
Tested-by: Shu Zhong <shuz@nvidia.com>