msm: vidc: Use Dcvs only when there is no resolution change

When driver detects that there is a dynamic resolution change
mid-stream it will not activate dcvs.

CRs-Fixed: 1007339
Change-Id: Ia5e5b42598b7e32360267e42665a5ce3880aaeee
Signed-off-by: Rohit Kulkarni <rkulkarn@codeaurora.org>