[OCFS2] Documentation Fix

Update ocfs2.txt to add "cluster aware lockf" under missing features.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

Documentation/filesystems/ocfs2.txt

@@ -35,6 +35,7 @@ Features which OCFS2 does not support yet:
 	  be cluster coherent.
 	- quotas
 	- cluster aware flock
+	- cluster aware lockf
 	- Directory change notification (F_NOTIFY)
 	- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
 	- POSIX ACLs