leds: Make header variable naming consistent

There is one place where the struct led_classdev as the function
argument is named differently. Fix it.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
diff --git a/include/linux/leds.h b/include/linux/leds.h
index d3a73f5..3c1a8ce 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -62,7 +62,7 @@
 
 extern int led_classdev_register(struct device *parent,
 				 struct led_classdev *led_cdev);
-extern void led_classdev_unregister(struct led_classdev *lcd);
+extern void led_classdev_unregister(struct led_classdev *led_cdev);
 extern void led_classdev_suspend(struct led_classdev *led_cdev);
 extern void led_classdev_resume(struct led_classdev *led_cdev);