mm-video: vidc: defer flush until headers are consumed

In case flush arrives while codec-config buffers are sent
to codec, defer sending flush till codec config buffers
are consumed. This fixes CTS tests which issue flush
right after configure (i.e after queueing headers)

Change-Id: I8cfcaecacc79da8d2c75a521b2a616a20aa69099
2 files changed