msm: mdss: Flush changes to post processing immediately

Current post processing changes wait for a display update to write its data
to registers. Trigger post processing configuration at time of update so
that the updated features will be updated at next vsync. Needed by
destination side post processing features in particular since their updates
are made independently of display updates and effect objective display
quality.

Change-Id: Ib5a2b4c33e45bece74dea2d8e17b5c3d239206b8
Signed-off-by: Carl Vanderlip <carlv@codeaurora.org>
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>
4 files changed