msm: mdss: avoid requesting ov_lock in esd thread

From DSI HW version 103 onwards, for smart panels command and
data arbitration is possible in the h/w with the help of burst mode
feature in DSI controller. Hence removing the synchronization
mechanism which can cause performance issues.

CRs-Fixed: 1042240

Change-Id: I8eeb3508e2258318538e893069a2c74c068026fc
Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>