leds-wm8350: don't use flush_scheduled_work()

flush_scheduled_work() is deprecated and scheduled to be removed.
Directly flush led->work on removal instead.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Richard Purdie <rpurdie@rpsys.net>

drivers/leds/leds-wm8350.c

@@ -276,7 +276,7 @@ static int wm8350_led_remove(struct platform_device *pdev)
 	struct wm8350_led *led = platform_get_drvdata(pdev);
 
 	led_classdev_unregister(&led->cdev);
-	flush_scheduled_work();
+	flush_work_sync(&led->work);
 	wm8350_led_disable(led);
 	regulator_put(led->dcdc);
 	regulator_put(led->isink);