namedtuple usage doesn't work on all boards.

[caternuson]

The syntax here:

Adafruit_CircuitPython_AS7341/adafruit_as7341.py

Line 195 in a0f486f

_SmuxOut = namedtuple("_SmuxOut", "DISABLED ADC0 ADC1 ADC2 ADC3 ADC4 ADC5")

does not work for all boards. The feature is left out for "small" boards, like:

Adafruit CircuitPython 6.2.0 on 2021-04-05; Adafruit QT Py M0 with samd21e18
>>> from collections import namedtuple
>>> foo = namedtuple("foo", "x y z")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: object 'str' is not a tuple or list
>>> foo = namedtuple("foo", ("x","y","z"))
>>>