set max reference frame to 1

BZ: 107416

in psb_video, if max reference frame is 4, the level will be re-calculated with new rule
so set to 1 as only 1 frame referenced during encoding

Change-Id: I40d670af67b8f2620b9f0194c7c633edadbd990b
Signed-off-by: Zhao Liang <leo.zhao@intel.com>
Reviewed-on: http://android.intel.com:8080/107839
Reviewed-by: cactus <cactus@intel.com>
Reviewed-by: Shi, PingX <pingx.shi@intel.com>
Tested-by: Shi, PingX <pingx.shi@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
1 file changed