disp: msm: dsi: reject POMS commit with active changed

Reject composition if panel mode switch is requested
during power on/off commits.

Change-Id: I3a5b28fd9f5bd927537824033a1c8dc838366d5b
Signed-off-by: Lei Chen <chenlei@codeaurora.org>
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>