msm: camera: ope: Clear comp events before each request

If there is a stale entry of any event in the CDM,
it will end the wait of same event in next request.
So, clearing the comp events before each request.

CRs-Fixed: 2611231
Change-Id: I252ee5edaea1cda34dc48343dd6bc865b490e977
Signed-off-by: Rishabh Jain <risjai@codeaurora.org>