MIPS: Jazz: Migrate to new 'set-state' interface

Migrate jazz driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

We weren't doing anything in the ->set_mode() callback. So, this patch
doesn't provide any set-state callbacks.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10600/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/jazz/irq.c

@@ -110,18 +110,11 @@ asmlinkage void plat_irq_dispatch(void)
 	}
 }
 
-static void r4030_set_mode(enum clock_event_mode mode,
-			   struct clock_event_device *evt)
-{
-	/* Nothing to do ...  */
-}
-
 struct clock_event_device r4030_clockevent = {
 	.name		= "r4030",
 	.features	= CLOCK_EVT_FEAT_PERIODIC,
 	.rating		= 300,
 	.irq		= JAZZ_TIMER_IRQ,
-	.set_mode	= r4030_set_mode,
 };
 
 static irqreturn_t r4030_timer_interrupt(int irq, void *dev_id)