media: dt-bindings: media: allegro,al5e: Convert to YAML

Convert the Allegro DVT video IP codec text binding to Yaml.

Add the converted binding to the MAINTAINERS file.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>