To make sure for each writeback play the reg is configured and avoid mdp hang. Change-Id: I29bdc31f27accca84e7add126c1c1e3c8a78fa15 Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org> Signed-off-by: Sudhir Sharma <sudsha@codeaurora.org> (cherry picked from commit 36ca4e992dc5c75a2dd709969db850aa02e7c6e7)