MAINTAINERS: Add new Marvell CN9130-based files to track

Marvell has a new branch of products called CN9130 based on AP807 and
CP115 which are derivatives of the currently supported AP806 and
CP110. Update the MAINTAINERS entry to reflect this change in the
naming.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>