msm: mdss: fix lane configuration during DSI overflow recovery

While performing DSI overflow recovery operations, we currently
enable all the 4 DSI data lanes. For panels which have less than
4 data lanes, this might cause issues. Hence, program the
DSI_CTRL register based on the lane configuration that exists
prior to the overflow recovery operation.

Change-Id: I4131adb12169491c862033340a5f72efbd56971c
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>