drm/i915/request: 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 <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Acked-by: Zack Rusin <[e-mail]>
Acked-by: Jani Nikula <[e-mail]>
Link: https://lore.kernel.org/all/[e-mail]

drivers/gpu/drm/i915/i915_request.c

···
 {
 	struct i915_request_watchdog *wdg = &rq->watchdog;
 
-	hrtimer_init(&wdg->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	wdg->timer.function = __rq_watchdog_expired;
+	hrtimer_setup(&wdg->timer, __rq_watchdog_expired, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 }
 
 static void __rq_arm_watchdog(struct i915_request *rq)