V4L/DVB (10279): cx18: Print driver version number when logging status

Make sure v4l2-ctl --log-status outputs the driver version.

Reported-by: David Dombroski <davedom@optonline.net>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>