SKL and BDW use the same PAK pipeline for H.264/MPEG-2 encoding
SKL and BDW use the same PAK pipeline for H.264/MPEG-2 encoding

Still use different functions if using GPU to construct the batchbuffer
for PAK

Signed-off-by: Xiang, Haihao <8d677183e5993577d4fa73a419b76987913292d6@intel.com>
(cherry picked from commit 9034de9ca1493cd7198b7c3d4717891f08597b88)

01org/iotg-lin-gfx-va-driver,gbeauchesne/libva-intel-driver,uartie/vaapi-intel-driver,01org/iotg-lin-gfx-va-driver,gbeauchesne/libva-intel-driver,gbeauchesne/libva-intel-driver,01org/iotg-lin-gfx-va-driver,uartie/vaapi-intel-driver,uartie/vaapi-intel-driver,gbeauchesne/libva-intel-driver,uartie/vaapi-intel-driver,chenxianqin/vaapi-intel-driver,gbeauchesne/libva-intel-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,chenxianqin/vaapi-intel-driver,chenxianqin/vaapi-intel-driver,uartie/vaapi-intel-driver,chenxianqin/vaapi-intel-driver,chenxianqin/vaapi-intel-driver