Add basic error checking to legacy property init

Let init and rename funcitons return success or failure values.

Change-Id: Ieed86cac8a0dcfd770a89dacc57fd306e7a6ad8d
diff --git a/legacy_property_service.h b/legacy_property_service.h
index 172055f..d20bdef 100644
--- a/legacy_property_service.h
+++ b/legacy_property_service.h
@@ -20,6 +20,6 @@
 #include <stdbool.h>
 
 void legacy_get_property_workspace(int *fd, int *sz);
-void legacy_properties_init();
+int legacy_properties_init();
 
 #endif	/* _LEGACY_PROPERTY_H */