HDR playback needs metadata to be sent to the sink
while the playback is ongoing and needs a proper
teardown sequence when the playback has ended with respect
to the infoframe being sent to the sink.
This needs a state machine to synchronize start/stop of
the playback with sending the right metadata along with
resetting the infoframe HDMI registers.
Add support for this HDR playback control state machine.
Change-Id: I229183531f7ccb48579e74d02e0a1dea1cb945ff
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
033b9198d0