msm: vidc: Fix setting frame rate control

Fix setting frame rate control for HW decoders and encoders.
Remove old handling of frame rate where set param was used.

Change-Id: I42f7b35e77d5d54fbdc2cc83d5ec407e5917d1c8
Signed-off-by: Amit Shekhar <ashekhar@codeaurora.org>