mm-video-v4l2: test: Add support for trick mode

Add controls for setting core to performance mode.
Add Flush logic for switching from display to decode
output order and vice versa.
Add logic to queue h264 idr, i-frame with decode order.
Add logic to queue mpeg2 sequence and i-frame
with decode order.

Change-Id: Icb1caf15013befe100be042ae26e1fb5477cd08d
2 files changed