fix format string

Index: cpu/apic.cc
--- cpu/apic.cc.orig
+++ cpu/apic.cc
@@ -26,6 +26,8 @@
 #include "scalar_arith.h"
 #include "iodev/iodev.h"
 
+#include <inttypes.h>
+
 #if BX_SUPPORT_APIC
 
 extern bool simulate_xapic;
@@ -1176,7 +1178,7 @@ void bx_local_apic_c::set_vmx_preemption_timer(Bit32u 
   vmx_preemption_timer_value = value;
   vmx_preemption_timer_initial = bx_pc_system.time_ticks();
   vmx_preemption_timer_fire = ((vmx_preemption_timer_initial >> vmx_preemption_timer_rate) + value) << vmx_preemption_timer_rate;
-  BX_DEBUG(("VMX Preemption timer: value = %u, rate = %u, init = %u, fire = %u", value, vmx_preemption_timer_rate, vmx_preemption_timer_initial, vmx_preemption_timer_fire));
+  BX_DEBUG(("VMX Preemption timer: value = %u, rate = %u, init = %" PRIu64 ", fire = %" PRIu64, value, vmx_preemption_timer_rate, vmx_preemption_timer_initial, vmx_preemption_timer_fire));
   bx_pc_system.activate_timer_ticks(vmx_timer_handle, vmx_preemption_timer_fire - vmx_preemption_timer_initial, 0);
   vmx_timer_active = 1;
 }