v4l2dec: CB2 modify dw on low mem mode [1/3]

PD#SWPL-187525

Problem:
modify dw on low mem mode

Solution:
modify dw on low mem mode

Verify:
AH212

Signed-off-by: le.han <le.han@amlogic.com>
Change-Id: I82666ed2a268e88c174b84f26eeb7ca1df782f20
3 files changed