msm: mdss: update DSI ULPS entry/exit sequence

Update the DSI ULPS sequence as per h/w recommended sequence
to add support for ULPS feature for SDM439 target.

Change-Id: Id57263ac300057aab6f0549d0ece747b5f1f2098
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
5 files changed