apic: Stop timer on reset

All LVTs are masked on reset, so the timer becomes ineffective. Letting
it tick nevertheless is harmless, but will at least create a spurious
trace event.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

hw/apic.c

@@ -528,6 +528,8 @@ void apic_init_reset(DeviceState *d)
     s->initial_count_load_time = 0;
     s->next_time = 0;
     s->wait_for_sipi = 1;
+
+    qemu_del_timer(s->timer);
 }
 
 static void apic_startup(APICState *s, int vector_num)