media: Add maintainer for IMX jpeg v4l2 driver

The driver is located in drivers/media/platform/imx-jpeg,
and it applies to the JPEG decoder from i.MX QXP and QM.

Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>