mm-video: vdec: Separate meta buffers support in secure mode

Extradata is appended at the end of the output buffer
in the normal scenario. But in case of secure playback,
we can not parse the input and output buffers,
therefore extradata support is unavailable in this case.
This change adds the extradata support in case of secure
playback. For secure playback,extradata is now dumped
in the separate meta buffers that enables HLOS to read
and parse it.

Change-Id: Ic4358a519f22a121122098908a596be62497efa6
4 files changed