libs: filter: handle RGB to/from YUV color primary driver quirk
libs: filter: handle RGB to/from YUV color primary driver quirk

The intel-media-driver (iHD) can't convert output color
primaries when doing YUV to/from RGB CSC.  Thus, we must
keep the output color primaries the same as the input
color primaries for this case.

fixes #238

ceyusa/gstreamer-vaapi,ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi,GStreamer/gstreamer-vaapi