pull XFS support out of Kconfig submenu

It seems slightly odd to me that XFS support should be in a seperate submenu, when all the other filesystems are not using submenus but are directly selectable from the Filesystems menu.
This patch makes XFS Kconfig entries behave like everything else.

Ignore if there's a good reason for the menu, please consider applying otherwise.

---

 fs/xfs/Kconfig |    5 +----
 1 files changed, 1 insertion(+), 4 deletions(-)

@@ -1,5 +1,3 @@
-menu "XFS support"
-
 config XFS_FS
 	tristate "XFS filesystem support"
 	select EXPORTFS if NFSD!=n

@@ -22,6 +20,7 @@
 
 config XFS_EXPORT
 	bool
+	depends on XFS_FS
 	default y if XFS_FS && EXPORTFS
 
 config XFS_RT

@@ -81,5 +80,3 @@
 	  Linux website <http://acl.bestbits.at/>.
 
 	  If you don't know what Access Control Lists are, say N.
-
-endmenu