msm: vidc: Add support for encoder deinterlacing

Venus FW supports deinterlacing for encoder. FW doesn't
support deinterlacing along rotation. Driver needs to
make sure that rotation and deinterlacing are not called
together. This change adds support for encoder deinterlacing.

Change-Id: Ia3521f52ea12e89193fb9c8154b8bbdb670f14ff
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>