switch ->is_visible() to returning umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index edaccad..b7944f9 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -1477,7 +1477,7 @@
 	NULL
 };
 
-static mode_t asus_sysfs_is_visible(struct kobject *kobj,
+static umode_t asus_sysfs_is_visible(struct kobject *kobj,
 				    struct attribute *attr,
 				    int idx)
 {