Staging: add mailing list address for staging tree

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

MAINTAINERS

diff --git a/MAINTAINERS b/MAINTAINERS
index 035df9d..1e14f7b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5479,6 +5479,7 @@
 P:	Greg Kroah-Hartman
 M:	gregkh@suse.de
 T:	quilt kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
+L:	devel@driverdev.osuosl.org
 S:	Maintained
 F:	drivers/staging/