tools/cpboard.py: fix backwards logic of 'wait_for_response' in #3005
tools/cpboard.py: fix backwards logic of 'wait_for_response' in #3005

adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/micropython,adafruit/micropython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython