[GFS2] Fix Kconfig

Here is a patch to fix up the Kconfig so that we don't land up with
problems when people disable the NET subsystem.  Thanks for all the hints and
suggestions that people have sent me regarding this.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Aleksandr Koltsoff <czr@iki.fi>
Cc: Toralf Förster <toralf.foerster@gmx.de>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: Chris Zubrzycki <chris@middle--earth.org>
Cc: Patrick Caulfield <pcaulfie@redhat.com>

fs/gfs2/Kconfig

@@ -34,7 +34,9 @@ config GFS2_FS_LOCKING_NOLOCK
 
 config GFS2_FS_LOCKING_DLM
 	tristate "GFS2 DLM locking module"
-	depends on GFS2_FS
+	depends on GFS2_FS && NET && INET && (IPV6 || IPV6=n)
+	select IP_SCTP if DLM_SCTP
+	select CONFIGFS_FS
 	select DLM
 	help
 	Multiple node locking module for GFS2