QMP: Introduce RTC_CHANGE event

Emitted whenever the RTC time changes.

Signed-off-by: Luiz Capitulino <[email protected]>
Signed-off-by: Anthony Liguori <[email protected]>
diff --git a/sysemu.h b/sysemu.h
index d77344c..afa11b5 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -256,6 +256,8 @@
 void do_usb_del(Monitor *mon, const QDict *qdict);
 void usb_info(Monitor *mon);
 
+void rtc_change_mon_event(struct tm *tm);
+
 void register_devices(void);
 
 #endif