media: Revert "media: av7110: move to staging/media/deprecated/saa7146"

This reverts commit 3e9ad662.

The av7110 is still in use, so it can't be deprecated. Move it back
to staging/media for now.

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