media/dvb: Deregister dma buffers fom shmbridge
It's possible for video decoder to keep using the externally allocated
buffers in userspace even at PES filter switching without freeing them.
Internal mechanism is needed to call "qtee_shmbridge_deregister" in
DMX_STOP path of the plug-in to handle this usecase.
Change-Id: I18d17609dabf5c62237bea958d7c81392ad554cc
Signed-off-by:
Murthy Nidadavolu <mnssr@codeaurora.org>
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