video: tegra: hdmi: unpowergate dc if powergated

video: tegra: hdmi: unpowergate dc if powergated

Need to unpowergate DC before updating monitor specs.
updating monitorspecs triggers NEW_MODELIST call chain. This
will trigger pan display.

bug 1478898

Change-Id: If4a4616e63c2293d6b1bd6824123bfedf6520721
Signed-off-by: Pankaj Dabade <pdabade@nvidia.com>
Reviewed-on: http://git-master/r/380343
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: Eric Brower <ebrower@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Jong Kim <jongk@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>