ARM: use clockevents_config_and_register() where possible

The clockevent core is able to figure out the best mult and shift,
calculate min_delta_ns and max_delta_ns, with the necessary info passed
into clockevents_config_and_register().  Use this combined configure
and register function where possible to make the codes less error prone
and gain some positive diff stat.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Tested-by: Roland Stigge <stigge@antcom.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: David Brown <davidb@codeaurora.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Barry Song <baohua.song@csr.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-pxa/time.c

@@ -113,18 +113,14 @@ static void __init pxa_timer_init(void)
 
 	setup_sched_clock(pxa_read_sched_clock, 32, clock_tick_rate);
 
-	clockevents_calc_mult_shift(&ckevt_pxa_osmr0, clock_tick_rate, 4);
-	ckevt_pxa_osmr0.max_delta_ns =
-		clockevent_delta2ns(0x7fffffff, &ckevt_pxa_osmr0);
-	ckevt_pxa_osmr0.min_delta_ns =
-		clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_pxa_osmr0) + 1;
 	ckevt_pxa_osmr0.cpumask = cpumask_of(0);
 
 	setup_irq(IRQ_OST0, &pxa_ost0_irq);
 
 	clocksource_mmio_init(OSCR, "oscr0", clock_tick_rate, 200, 32,
 		clocksource_mmio_readl_up);
-	clockevents_register_device(&ckevt_pxa_osmr0);
+	clockevents_config_and_register(&ckevt_pxa_osmr0, clock_tick_rate,
+					MIN_OSCR_DELTA * 2, 0x7fffffff);
 }
 
 #ifdef CONFIG_PM