MAINTAINERS: change mailing list address for CIFS

We're moving the mailing list to linux-cifs@vger.kernel.org.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

MAINTAINERS

@@ -1581,7 +1581,7 @@ F:	include/linux/coda*.h
 
 COMMON INTERNET FILE SYSTEM (CIFS)
 M:	Steve French <sfrench@samba.org>
-L:	linux-cifs-client@lists.samba.org (moderated for non-subscribers)
+L:	linux-cifs@vger.kernel.org
 L:	samba-technical@lists.samba.org (moderated for non-subscribers)
 W:	http://linux-cifs.samba.org/
 Q:	http://patchwork.ozlabs.org/project/linux-cifs-client/list/