media: dt-bindings: sony,imx415: update maintainer e-mail address

I recently left WolfVision but would like to continue to maintain the
Sony IMX415 image sensor driver. Update my e-mail address.

Signed-off-by: Michael Riesch <michael.riesch@collabora.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>