sched/fair: Make ilb_notifier an explicit call

No need for an extra notifier.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160310120025.693720241@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

kernel/sched/core.c

@@ -7131,6 +7131,7 @@ int sched_cpu_dying(unsigned int cpu)
 	raw_spin_unlock_irqrestore(&rq->lock, flags);
 	calc_load_migrate(rq);
 	update_max_interval();
+	nohz_balance_exit_idle(cpu);
 	return 0;
 }
 #endif