Add include for RPFlatParams.h to LoadEPDB.h

We use the RPFlatParams class in this file, so we also need
to include it's corresponding header to make this header compile
on it's own.

RecoHI/HiEvtPlaneAlgos/interface/LoadEPDB.h

@@ -7,6 +7,8 @@
 #include <string>
 
 // user include files
+#include "CondFormats/HIObjects/interface/RPFlatParams.h"
+
 #include "FWCore/Framework/interface/Frameworkfwd.h"
 #include "FWCore/Framework/interface/EDProducer.h"