batman-adv: Prefix debugfs defines with BATADV_

Reported-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/bat_debugfs.c b/net/batman-adv/bat_debugfs.c
index ce84a61..f9af65e 100644
--- a/net/batman-adv/bat_debugfs.c
+++ b/net/batman-adv/bat_debugfs.c
@@ -311,7 +311,7 @@
 	struct bat_debuginfo *bat_debug;
 	struct dentry *file;
 
-	batadv_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL);
+	batadv_debugfs = debugfs_create_dir(BATADV_DEBUGFS_SUBDIR, NULL);
 	if (batadv_debugfs == ERR_PTR(-ENODEV))
 		batadv_debugfs = NULL;