No world-writable files in debugfs

Change-Id: I60c9107b9f6aef53efbe6fa67f1465b2f1a7c2bb
Signed-off-by: Glenn Kasten <gkasten@google.com>
diff --git a/sound/soc/msm/qdsp6/q6afe.c b/sound/soc/msm/qdsp6/q6afe.c
index a4f4b60..c6b54fa 100644
--- a/sound/soc/msm/qdsp6/q6afe.c
+++ b/sound/soc/msm/qdsp6/q6afe.c
@@ -1746,11 +1746,11 @@
 	this_afe.apr = NULL;
 #ifdef CONFIG_DEBUG_FS
 	debugfs_afelb = debugfs_create_file("afe_loopback",
-	S_IFREG | S_IWUGO, NULL, (void *) "afe_loopback",
+	0220, NULL, (void *) "afe_loopback",
 	&afe_debug_fops);
 
 	debugfs_afelb_gain = debugfs_create_file("afe_loopback_gain",
-	S_IFREG | S_IWUGO, NULL, (void *) "afe_loopback_gain",
+	0220, NULL, (void *) "afe_loopback_gain",
 	&afe_debug_fops);