can: bcm: Use hrtimer_forward_now()

hrtimer_forward_now() provides the same functionality as the open coded
hrimer_forward() invocation. Prepares for removal of hrtimer_forward() from
the public interfaces.

Link: https://lore.kernel.org/all/20210923153339.684546907@linutronix.deSigned-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: linux-can@vger.kernel.org
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: netdev@vger.kernel.org
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

net/can/bcm.c

@@ -625,7 +625,7 @@ static enum hrtimer_restart bcm_rx_thr_handler(struct hrtimer *hrtimer)
 	struct bcm_op *op = container_of(hrtimer, struct bcm_op, thrtimer);
 
 	if (bcm_rx_thr_flush(op)) {
-		hrtimer_forward(hrtimer, ktime_get(), op->kt_ival2);
+		hrtimer_forward_now(hrtimer, op->kt_ival2);
 		return HRTIMER_RESTART;
 	} else {
 		/* rearm throttle handling */