video_core: Reorganize headers

src/video_core/utils.cpp

@@ -2,8 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <stdio.h>
-#include <string.h>
+#include <cstdio>
+#include <cstring>
 
 #include "video_core/utils.h"