Add sd_event processing to host ipmid application

In order to support the timer function, it's required
to use the sd_event loop instead of sdbus loop

Change-Id: I3a30fee1a21cbfadd0cbb5478bf46bea4b5ca0b8
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
diff --git a/host-ipmid/ipmid-api.h b/host-ipmid/ipmid-api.h
index 67a1000..cc3be36 100644
--- a/host-ipmid/ipmid-api.h
+++ b/host-ipmid/ipmid-api.h
@@ -122,6 +122,7 @@
 };
 
 sd_bus *ipmid_get_sd_bus_connection(void);
+sd_event *ipmid_get_sd_event_connection(void);
 sd_bus_slot *ipmid_get_sd_bus_slot(void);
 
 #ifdef __cplusplus