Allow out-of-tree builds

Change-Id: If4b97e65f63c3abbf23140dd97b9febe00b3be0d
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/ipmid.hpp b/ipmid.hpp
index f465072..bcf15b5 100644
--- a/ipmid.hpp
+++ b/ipmid.hpp
@@ -1,6 +1,6 @@
 #ifndef __HOST_IPMID_IPMI_H__
 #define __HOST_IPMID_IPMI_H__
-#include "ipmid-api.h"
+#include "host-ipmid/ipmid-api.h"
 #include <stdio.h>
 #include "host-services.h"