added stdio.h to includes for DBG compilation

src/net/netdevice.c

@@ -16,6 +16,7 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <stdio.h>
 #include <stdint.h>
 #include <byteswap.h>
 #include <string.h>