All 4 of the "colorspace" components were not originally handled.
Causing issue related to xfer_func not being initialized properly.

This was found with v4l2-compliance test.
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>