video: tegra: adf: fix call to tegra_dc_blank()

video: tegra: adf: fix call to tegra_dc_blank()

Update tegra_dc_blank() call in compliance to b072055d

Bug 1459374

Change-Id: I9d96a468df9b750ff75afb11744b602525a8ab5b
Signed-off-by: Xia Yang <xiay@nvidia.com>
Reviewed-on: http://git-master/r/427911
(cherry picked from commit cc202fc8449564c9a300240acf38652e35427288)
Reviewed-on: http://git-master/r/454814
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Michael I Gold <gold@nvidia.com>
Tested-by: Michael I Gold <gold@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>