i965_drv_video: Currently only use tiled-Y surfaces on Sandybridge
i965_drv_video: Currently only use tiled-Y surfaces on Sandybridge

Signed-off-by: Xiang, Haihao <8d677183e5993577d4fa73a419b76987913292d6@intel.com>

chenxianqin/vaapi-libva,android-ia/hardware_intel_libva,zzhhui/libva,pma1/libva,01org/libva-cros,halleyzhao/libva-fdo,01org/iotg-lin-gfx-libva,gbeauchesne/libva,CyanogenMod/android_hardware_intel_libva,01org/libva-cros,zzhhui/libva,Distrotech/libva,Distrotech/libva,gbeauchesne/libva,01org/iotg-lin-gfx-libva,01org/libva-cros,halleyzhao/libva-fdo,Distrotech/libva,android-ia/hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,pma1/libva,zzhhui/libva,chenxianqin/vaapi-libva,pma1/libva,chenxianqin/vaapi-libva,android-ia/hardware_intel_libva,halleyzhao/libva-fdo,01org/iotg-lin-gfx-libva,gbeauchesne/libva,CyanogenMod/android_hardware_intel_libva