amlv4l2: CF1 add private event and signal [2/2]

PD#SWPL-128446

Problem:
add private custom upstream event and private signal
amldemux will detect private event and connect private signal
amlv4l2 will emit the latest decoded pts
amldemux will using the latest decoded pts for flow rate control

Solution:
(detail info)

Verify:
(detail info)

Change-Id: Ifa2d1cbbabbf1fe7fc258efacff306733686a7dd
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
1 file changed