[media] vivid: add the video capture and output parts

This adds the ioctl and vb2 queue support for video capture and output.
Part of this is common to both, so that is placed in a vid-common source.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

Author: Hans Verkuil