[media] bt819: the ioctls in the header are internal to the kernel

Remove bt819.h from ioctl-number.txt and make a note in the header
that these ioctls are for internal use only.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2 files changed