perf: update event structure

Change-Id: I5bc0fdd42db509b5d2daca7d97e29ad1f7d11f1a

arch/arm64/kernel/perfctr_armv8pmu.c

@@ -824,6 +824,7 @@ static void armv8pmu_handle_irq(void *priv)
 	}
 
 	if (event) {
+		ihk_mc_event_update(event);
 		ihk_mc_event_set_period(event);
 	}
 	return;