[media] cx18: embed video_device

Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --cc drivers/media/pci/cx18/cx18-alsa-main.c
Simple merge

diff --cc drivers/media/pci/cx18/cx18-driver.h
Simple merge

diff --cc drivers/media/pci/cx18/cx18-fileops.c
Simple merge

diff --cc drivers/media/pci/cx18/cx18-ioctl.c
Simple merge

diff --cc drivers/media/pci/cx18/cx18-streams.c
Simple merge

diff --cc drivers/media/pci/cx18/cx18-streams.h
Simple merge