Add frame_type to VP8 encoder
Add frame_type to VP8 encoder

From penne.y.lee at intel.com

Signed-off-by: Austin Yuan <f447c34e4ebcef84a81b40a8d4dbc448a14e5570@intel.com>
(cherry picked from commit c61d986851140a6d1e3f9a6d788bcb7a9407dffc)

zzhhui/libva,01org/libva-cros,zzhhui/libva,01org/libva-cros,gbeauchesne/libva,chenxianqin/vaapi-libva,01org/iotg-lin-gfx-libva,gbeauchesne/libva,01org/libva-cros,chenxianqin/vaapi-libva,01org/iotg-lin-gfx-libva,01org/iotg-lin-gfx-libva,chenxianqin/vaapi-libva,zzhhui/libva,gbeauchesne/libva