msm7627a: Toggle reset pin of DSI client & power down DSI chip

 - For splash screen to work on FFA , toggle RESET pin of DSI
client before sending panel init commands.
 - Ensure DSI Bridge chip is powered down during apps BL
exit so that when kernel comes up DSI client will be powered
on in a clean state.
 - Also corrected missing indentation in shutdown function.

Change-Id: If3cf4f90463379871ebf4f66b7fe0da8bf1a742f
1 file changed