metag: Add MAINTAINERS entry

Add MAINTAINERS entry for the metag architecture port.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Cesar Eduardo Barros <cesarb@cesarb.net>
Cc: Joe Perches <joe@perches.com>
Cc: "David S. Miller" <davem@davemloft.net>

MAINTAINERS

@@ -5033,6 +5033,13 @@ F:	drivers/mtd/
 F:	include/linux/mtd/
 F:	include/uapi/mtd/
 
+METAG ARCHITECTURE
+M:	James Hogan <james.hogan@imgtec.com>
+S:	Supported
+F:	arch/metag/
+F:	Documentation/metag/
+F:	Documentation/devicetree/bindings/metag/
+
 MICROBLAZE ARCHITECTURE
 M:	Michal Simek <monstr@monstr.eu>
 L:	microblaze-uclinux@itee.uq.edu.au (moderated for non-subscribers)