mm-video: vidc: Add support to send DECODEONLY flag to client

For some CODECS, some frames are used only for decoding but not
for display. This information needs to be conveyed to clients
through DECODEONLY flag. Add support to se the same flag.

CRs-Fixed: 481155
Change-Id: I32d96b0e927c980c316433990c3db945cd53fb94
1 file changed