vpp: hold the vpp setting when meet the non-dw afbc frame [1/1]

vpp: hold the vpp setting when meet the non-dw afbc frame [1/1]

PD#SWPL-7513

Problem:
When meet the non-dw afbc frame, vpp can not display with
scaling down as expected.

Solution:
Hold the current vpp setting and wait provider to switch
non-afbc.

Verify:
x301

Change-Id: I3c0e678d2da42376f3a77e334b8c5ce48460273b
Signed-off-by: Brian Zhu <brian.zhu@amlogic.com>