clocksource: sh_cmt: use remove_irq() and remove clockevent workaround

Update the sh_cmt driver to make use of recent irq and clockevent changes:
 - use remove_irq() together with setup_irq()
 - remove mult workaround since WARN_ON() now has been moved

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

drivers/clocksource/sh_cmt.c

@@ -465,7 +465,6 @@ static void sh_cmt_register_clockevent(struct sh_cmt_priv *p,
 	ced->set_mode = sh_cmt_clock_event_mode;
 
 	pr_info("sh_cmt: %s used for clock events\n", ced->name);
-	ced->mult = 1; /* work around misplaced WARN_ON() in clockevents.c */
 	clockevents_register_device(ced);
 }
 
@@ -557,7 +556,7 @@ static int sh_cmt_setup(struct sh_cmt_priv *p, struct platform_device *pdev)
 			       cfg->clockevent_rating,
 			       cfg->clocksource_rating);
  err2:
-	free_irq(irq, p);
+	remove_irq(irq, &p->irqaction);
  err1:
 	iounmap(p->mapbase);
  err0: