same54: Use the same optimization as other sam d5x/e5x
same54: Use the same optimization as other sam d5x/e5x

It's likely that this is a relic of my early testing.

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