backlight: lcd - Fix wrong sizeof

Which is why I have always preferred sizeof(struct foo) over
sizeof(var).
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

drivers/video/backlight/lcd.c

@@ -56,7 +56,7 @@ static int fb_notifier_callback(struct notifier_block *self,
 
 static int lcd_register_fb(struct lcd_device *ld)
 {
-	memset(&ld->fb_notif, 0, sizeof(&ld->fb_notif));
+	memset(&ld->fb_notif, 0, sizeof(ld->fb_notif));
 	ld->fb_notif.notifier_call = fb_notifier_callback;
 	return fb_register_client(&ld->fb_notif);
 }