msm: vidc: Support low latency for decode

Add support for low latency control for video decode and
set internal structure accordingly. Unlike encode, don't
set any property on firmware for it.

CRs-Fixed: 2092063
Change-Id: Ia9449ea305d5eff5927f8e2ef2a22ab02b65a1b8
Signed-off-by: Saurabh Kothawade <skothawa@codeaurora.org>