Fix: AVC encoder cause bad frame when quality level 1 on SKL/APL
Fix: AVC encoder cause bad frame when quality level 1 on SKL/APL

Fixes #158

Signed-off-by: Pengfei Qu <Pengfei.Qu@intel.com>
(cherry picked from commit 76d4246cb1a7bd8bdaabddf004260a0529f2e89b)

Conflicts:
	src/gen9_avc_encoder.c

01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver