msm: vidc: Align enum in v4l2 and openmax

Flip/Mirror enum in v4l/openmax are not in sync. Due to this,
client may get wrong configuration and the video output may
go wrong.

Change-Id: I313ea94cc7ea5a8f2b7f697be98d3592f6c9bf91
Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>