amlv4l2dec: CB1 fix last buffer leak [1/1]

PD#SWPL-124832

Problem:
when doing yts case test of MSE Codec Tests MSE (H264) LoopH264,
the video will play to end,then seek to starting to play again.
this cause dequeued last empty buffer can't queue to v4l2.

Solution:
dequeue last empty buffer as normal buffer.but set last buffer flag

Verify:
ah212

Change-Id: Ie827a1c90e55eace081e0867ae3ef9569f8a21f9
Signed-off-by: fei.deng <fei.deng@amlogic.com>
4 files changed