leds: trigger: pattern: Switch to use hrtimer_setup()

hrtimer_setup() takes the callback function pointer as argument and
initializes the timer completely.

Replace hrtimer_init() and the open coded initialization of
hrtimer::function with the new setup mechanism.

Patch was created by using Coccinelle.

Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://lore.kernel.org/all/76fa1cc9777a99a48f49f949abadc1c10af1bc64.1738746904.git.namcao@linutronix.de

Author: covanam

drivers/leds/trigger/ledtrig-pattern.c

@@ -483,8 +483,8 @@ static int pattern_trig_activate(struct led_classdev *led_cdev)
 	data->led_cdev = led_cdev;
 	led_set_trigger_data(led_cdev, data);
 	timer_setup(&data->timer, pattern_trig_timer_function, 0);
-	hrtimer_init(&data->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	data->hrtimer.function = pattern_trig_hrtimer_function;
+	hrtimer_setup(&data->hrtimer, pattern_trig_hrtimer_function, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 	led_cdev->activated = true;
 
 	if (led_cdev->flags & LED_INIT_DEFAULT_TRIGGER) {