afs, rxrpc: Add Marc Dionne as co-maintainer

Add Marc Dionne as a co-maintainer for kafs and rxrpc.
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -624,6 +624,7 @@ F:	fs/affs/
 
 AFS FILESYSTEM
 M:	David Howells <dhowells@redhat.com>
+M:	Marc Dionne <marc.dionne@auristor.com>
 L:	linux-afs@lists.infradead.org
 S:	Supported
 W:	https://www.infradead.org/~dhowells/kafs/
@@ -15792,6 +15793,7 @@ F:	drivers/infiniband/ulp/rtrs/
 
 RXRPC SOCKETS (AF_RXRPC)
 M:	David Howells <dhowells@redhat.com>
+M:	Marc Dionne <marc.dionne@auristor.com>
 L:	linux-afs@lists.infradead.org
 S:	Supported
 W:	https://www.infradead.org/~dhowells/kafs/