sws: GBRP output support

Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
sws: GBRP9, GBRP10 GBRP12 GBRP14 output support

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>