media: pwm-ir-tx: Avoid direct access to hrtimer clockbase

The field timer->base->get_time is a private implementation detail and
should not be accessed outside of the hrtimer core.

Switch to an equivalent higher-level helper.

Signed-off-by: Thomas Weißschuh <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Acked-by: Peter Zijlstra (Intel) <[e-mail]>
Acked-by: Sean Young <[e-mail]>
Link: https://lore.kernel.org/all/[e-mail]

drivers/media/rc/pwm-ir-tx.c

···
 static enum hrtimer_restart pwm_ir_timer(struct hrtimer *timer)
 {
 	struct pwm_ir *pwm_ir = container_of(timer, struct pwm_ir, timer);
-	ktime_t now;
 
 	/*
 	 * If we happen to hit an odd latency spike, loop through the
···
 		hrtimer_add_expires_ns(timer, ns);
 
 		pwm_ir->txbuf_index++;
-
-		now = timer->base->get_time();
-	} while (hrtimer_get_expires_tv64(timer) < now);
+	} while (hrtimer_expires_remaining(timer) > 0);
 
 	return HRTIMER_RESTART;
 }