CardReader: #define printf_P(...) to nothing. There is no stdout defined anymore.

CardReader/ISO7816-reader.h

@@ -2,7 +2,8 @@
 #include "../common/ISO7816-common.h"
 #include <stdio.h>
 #include <util/delay.h>
-#define printf(...) 
+#define printf(...)
+#define printf_P(...)
 
 #define CARD_PRESENCE_REG_PORT PORTB
 #define CARD_PRESENCE_REG_PIN  PINB