dlm: Make DLM depend on CONFIGFS_FS

This patch fixes the following kconfig error after changing
CONFIGFS_FS -> select SYSFS:

fs/sysfs/Kconfig:1:error: recursive dependency detected!
fs/sysfs/Kconfig:1:	symbol SYSFS is selected by CONFIGFS_FS
fs/configfs/Kconfig:1:	symbol CONFIGFS_FS is selected by DLM
fs/dlm/Kconfig:1:	symbol DLM depends on SYSFS
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: James Bottomley <James.Bottomley@suse.de>

fs/dlm/Kconfig

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