Input: xpad - use LED API when identifying wireless controllers

BugLink: https://bugs.launchpad.net/bugs/1810967

[ Upstream commit d9be398a ]

When lighting up the segment identifying wireless controller, Instead of
sending command directly to the controller, let's do it via LED API (usinf
led_set_brightness) so that LED object state is in sync with controller
state and we'll light up the correct segment on resume as well.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

drivers/input/joystick/xpad.c

@@ -1142,7 +1142,7 @@ static void xpad_send_led_command(struct usb_xpad *xpad, int command)
  */
 static void xpad_identify_controller(struct usb_xpad *xpad)
 {
-	xpad_send_led_command(xpad, (xpad->pad_nr % 4) + 2);
+	led_set_brightness(&xpad->led->led_cdev, (xpad->pad_nr % 4) + 2);
 }
 
 static void xpad_led_set(struct led_classdev *led_cdev,