test/transcode/mpeg2transcode: set right picture width/height in macroblocks
test/transcode/mpeg2transcode: set right picture width/height in macroblocks

Signed-off-by: Xiang, Haihao <8d677183e5993577d4fa73a419b76987913292d6@intel.com>
(cherry picked from commit f8be4a5477e58c4a27170f0c87eeedac8de60aef)

android-ia/hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,android-ia/hardware_intel_libva,halleyzhao/libva-fdo,halleyzhao/libva-fdo,halleyzhao/libva-fdo,android-ia/hardware_intel_libva