mm-video-v4l2: vdec: get updated buffer count from driver

HFR Playback(fps > 960) requires more input buffers. So if fps
is updated then input buffer count requirement might have
increased. So during get_parameter get buffer count from driver
instead of using OMX cached value from &drv_ctx.ip_buf.

Change-Id: Ice7981545be3ebbc59bcf405dc024077f1225d27
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>
1 file changed