di: request afbc when vpp use [1/2]

di: request afbc when vpp use [1/2]

PD#SWPL-6033

Problem:
afbc mode, when di bypass mode switch di path,
will cause flashing

Solution:
when mode change, request hw afbc from vpp, when idle
di use afbc, vpp need switch to none afbc mode, vf add
VIDTYPE_PRE_DI_AFBC flag for vpp use.

Verify:
tl1

Change-Id: I4aaf96044249d5b79bdc627018f0c0714c85f941
Signed-off-by: Yong Qin <yong.qin@amlogic.com>