drm/msm/dsi-staging: send roi commands during resolution switch

Send 2a/2b roi commands when display resolution is changed.
This is fixing panel corruption issue if resolution switch
command list doesn't have the new roi region updated.

Change-Id: I5244424e5dff2d07b88d52290365f3ad600eeb13
CRs-Fixed: 2166948
Signed-off-by: Vara Reddy <varar@codeaurora.org>
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>