adds missing include to templates

gen_input/templates/interp/CORENAME.cpp.gtl

@@ -39,6 +39,7 @@ def nativeTypeSize(int size){
 #include <iss/debugger/server.h>
 #include <iss/iss.h>
 #include <iss/interp/vm_base.h>
+#include <vm/fp_functions.h>
 #include <util/logging.h>
 #include <boost/coroutine2/all.hpp>
 #include <functional>