media: vim2m/vicodec: set device_caps in video_device struct

Instead of setting device_caps/capabilities in the querycap ioctl, set
it in struct video_device instead.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>