stm32/boards/LEGO_HUB_NO6: Set filesystem label as HUB_NO6.
stm32/boards/LEGO_HUB_NO6: Set filesystem label as HUB_NO6.

Signed-off-by: Damien George <99e6b749acbfbe2a596df99e91d24d6e1fdbee00@micropython.org>

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