amlv4l2dec: CB1 sync t3 branch to trunk [1/1]

PD#SWPL-119988

Problem:
sync code

Solution:
sync code:
1.reduce logs
2.don't probe /dev/vdiexx devices,only open /dev/video26
3.use import bufferpool mode default
4.add usleep to reduce cpu usage.

Verify:
ah212

Change-Id: I638d047157b359f2218b5dbe40cfef0fbead5ee4
Signed-off-by: fei.deng <fei.deng@amlogic.com>
5 files changed