Fix include header due to clang-tidy update

clang-tidy got smarter and pointed out the included header
issue.

Change-Id: If67270f3db1d085108684d9d1ef0e7f57660249a
Signed-off-by: Pavithra Barithaya <pavithrabarithaya07@gmail.com>
diff --git a/oem/ampere/event/cper.hpp b/oem/ampere/event/cper.hpp
index e4dd5cb..72a39e5 100644
--- a/oem/ampere/event/cper.hpp
+++ b/oem/ampere/event/cper.hpp
@@ -1,9 +1,9 @@
 #include "libcper/Cper.h"
 
-#include <stdint.h>
-#include <stdio.h>
 #include <unistd.h>
 
+#include <cstdint>
+#include <cstdio>
 #include <fstream>
 #include <vector>