configfs: add myself as co-maintainer, updated git tree

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJoel Becker <jlbec@evilplan.org>

MAINTAINERS

@@ -2939,7 +2939,8 @@ F:	drivers/usb/atm/cxacru.c
 
 CONFIGFS
 M:	Joel Becker <jlbec@evilplan.org>
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/configfs.git
+M:	Christoph Hellwig <hch@lst.de>
+T:	git git://git.infradead.org/users/hch/configfs.git
 S:	Supported
 F:	fs/configfs/
 F:	include/linux/configfs.h