#520 - workaround gcc/newlib issue on Ubuntu 24

Author: kilograham

system/rand/rand.c

@@ -5,6 +5,9 @@
  */
 
 #include <stdio.h>
+// Include sys/types.h before inttypes.h to work around issue with
+// certain versions of GCC and newlib which causes omission of PRIx64
+#include <sys/types.h>
 #include <inttypes.h>
 
 #include "pico/stdlib.h"