msm: mdss: Reset mdp3 in overlay play

Reset MDP3 if splash is enabled and BLIT is disabled.
When BLIT is disabled and composition is done through GLES,
DMA buffer is allocated during splash, causing play error.

Change-Id: If31c352c4d8dc5dea255fb59de09ef8d202de1d5
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>