media: MAINTAINERS: change tc358743 maintainer

Move maintainer from Mats to Hans.

Add bindings file to the list of maintained files while we're at it.

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