Fix default argument value of fifo_type

Author: jepler

ports/raspberrypi/bindings/rp2pio/StateMachine.c

@@ -234,7 +234,7 @@ static mp_obj_t rp2pio_statemachine_make_new(const mp_obj_type_t *type, size_t n
 
         { MP_QSTR_offset, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = PIO_ANY_OFFSET} },
 
-        { MP_QSTR_fifo_type, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_ROM_QSTR(MP_QSTR_rxtx) } },
+        { MP_QSTR_fifo_type, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_ROM_QSTR(MP_QSTR_auto) } },
         { MP_QSTR_mov_status_type, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_ROM_QSTR(MP_QSTR_txfifo) } },
         { MP_QSTR_mov_status_n, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
     };