[SPARC64]: Add tick_nohz_{stop,restart}_sched_tick() calls to cpu_idle().

#include <linux/reboot.h>

#include <linux/delay.h>

#include <linux/compat.h>

#include <linux/tick.h>

#include <linux/init.h>

#include <asm/oplib.h>

	set_thread_flag(TIF_POLLING_NRFLAG);

	while(1) {

		if (need_resched()) {

		tick_nohz_stop_sched_tick();

		while (!need_resched())

			sparc64_yield();

		tick_nohz_restart_sched_tick();

		preempt_enable_no_resched();

		schedule();

		preempt_disable();

	}

		sparc64_yield();

	}

}

extern char reboot_command [];