[DLM] Kconfig: don't show an empty DLM menu

Don't show an empty "Distributed Lock Manager" menu if IP_SCTP=n.

Reported by Dmytro Bagrii in kernel Bugzilla #7268.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NDavid Teigland <teigland@redhat.com>
Signed-off-by: NPatrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

fs/dlm/Kconfig

 menu "Distributed Lock Manager"
-	depends on INET && EXPERIMENTAL
+	depends on INET && IP_SCTP && EXPERIMENTAL
 
 config DLM
 	tristate "Distributed Lock Manager (DLM)"
 	depends on IPV6 || IPV6=n
-	depends on IP_SCTP
 	select CONFIGFS_FS
 	help
 	A general purpose distributed lock manager for kernel or userspace