Add required stdint.h header.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@13096 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavutil/x86_cpu.h

@@ -21,6 +21,7 @@
 #ifndef FFMPEG_X86CPU_H
 #define FFMPEG_X86CPU_H
 
+#include <stdint.h>
 #include "config.h"
 
 #ifdef ARCH_X86_64