stm32/boards/PYBD_SF2: Enable RF switch compile option.
stm32/boards/PYBD_SF2: Enable RF switch compile option.

adafruit/circuitpython,bvernoux/micropython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython,adafruit/circuitpython,henriknelson/micropython,bvernoux/micropython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython,adafruit/circuitpython,bvernoux/micropython,henriknelson/micropython,adafruit/circuitpython,henriknelson/micropython