[GFS2] Hook GFS2 into the Kbuild system

Adds GFS2 into fs/Kconfig and adds a Makefile entry

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/Kconfig b/fs/Kconfig
index ef78e3a..bec8afa 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -323,6 +323,7 @@
 	default n
 
 source "fs/xfs/Kconfig"
+source "fs/gfs2/Kconfig"
 
 config OCFS2_FS
 	tristate "OCFS2 file system support (EXPERIMENTAL)"