rename frup.h -> frup.hpp

This header contains c++ code.

Change-Id: I4bc6cf0ddfbdc6ac4d93580a5203bb59537bbb04
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/fru-area.hpp b/fru-area.hpp
index 76a3509..cc18178 100644
--- a/fru-area.hpp
+++ b/fru-area.hpp
@@ -7,7 +7,7 @@
 #include <string>
 #include <vector>
 #include <memory>
-#include "frup.h"
+#include "frup.hpp"
 #include "writefrudata.hpp"
 
 class ipmi_fru;