amlv4l2dec: CB2 only dqueue v4l2 event [1/1]

PD#SWPL-176615

Problem:
blocked by invoking VIDIOC_DQEVENT ioctl when waiting
source change event. if poll a buffer active event

Solution:
only poll v4l2 event before receive source change event

Verify:
ap222

Change-Id: I4ac6e8d207a011dfb8ac2c27d7dd62b59ab31da2
Signed-off-by: fei.deng <fei.deng@amlogic.com>
1 file changed