HID: apple: 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>
Link: https://lore.kernel.org/r/20230215-power_supply-leds-hid-v1-4-35b6f1dcee8a@weissschuh.netSigned-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/hid-apple.c

@@ -22,6 +22,7 @@
 #include <linux/slab.h>
 #include <linux/timer.h>
 #include <linux/string.h>
+#include <linux/leds.h>
 
 #include "hid-ids.h"