msm: camera: isp: Fix for Frame drop

If repocess snapshot stream kicks in and if we drop the frame
we are updating with wrong stream_id from stream info.
Updating with correct stream id for frame drop

Change-Id: Ib43e000c840cda0c429de315a91c85d176cb5380
Signed-off-by: Senthil Kumar Rajagopal <skrajago@codeaurora.org>