switch ->is_visible() to returning umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index a36addf..ac902f7 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -368,7 +368,7 @@
 	NULL
 };
 
-static mode_t ideapad_is_visible(struct kobject *kobj,
+static umode_t ideapad_is_visible(struct kobject *kobj,
 				 struct attribute *attr,
 				 int idx)
 {