fix dotstar for Gemma_M0 in CP3.0
fix dotstar for Gemma_M0 in CP3.0

Uncomment lines in mpconfigport.h for gemma_m0 to allow dotstar access.  same issue as #514 for trinket_m0
adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/micropython,adafruit/micropython,adafruit/micropython