power: supply: leds: explicitly include linux/leds.h

Instead of relying on an accidental, transitive inclusion of linux/leds.h
use it directly.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/power_supply_leds.c

@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/power_supply.h>
 #include <linux/slab.h>
+#include <linux/leds.h>
 
 #include "power_supply.h"