[media] em28xx: move sensor parameter fields from struct em28xx to struct v4l2

Move camera sensor resolution and xtal out of em28xx common struct,
as thore are used only by the em28xx v4l2 submodule.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --cc drivers/media/usb/em28xx/em28xx-camera.c
Simple merge

diff --cc drivers/media/usb/em28xx/em28xx-video.c
Simple merge

diff --cc drivers/media/usb/em28xx/em28xx.h
Simple merge