libefiwrapper: support CreateEvent, SignalEvent and CloseEvent
libefiwrapper: support CreateEvent, SignalEvent and CloseEvent

Change-Id: Iba0447133b7aa5c39c1e6ac75536055fb6e63412
Tracked-On: https://jira01.devtools.intel.com/browse/OAM-41029
Signed-off-by: Jeremy Compostella <5b4de6d90b3d4185ed5afe686aad4ea88ac71343@intel.com>
Reviewed-on: https://android.intel.com:443/556686

herbert-de-vaucanson/efiwrapper,herbert-de-vaucanson/efiwrapper