MAINTAINERS: Add osd maintained files (F:)

OSD files are found in three places:
drivers/scsi/osd/
include/scsi/osd_*
fs/exofs/

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index dc226e7..b9b2089 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4321,7 +4321,7 @@
 S:	Maintained
 F:	drivers/net/wireless/orinoco/
 
-OSD LIBRARY
+OSD LIBRARY and FILESYSTEM
 P:	Boaz Harrosh
 M:	bharrosh@panasas.com
 P:	Benny Halevy
@@ -4330,6 +4330,9 @@
 W:	http://open-osd.org
 T:	git git://git.open-osd.org/open-osd.git
 S:	Maintained
+F:	drivers/scsi/osd/
+F:	drivers/include/scsi/osd_*
+F:	fs/exofs/
 
 P54 WIRELESS DRIVER
 P:	Michael Wu