linux-phytec-fsl

MAINTAINERS: update my mail address

I don't own this mail address anymore. This patch change the mail
address to my current one.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>