__init__() arguments are not Pin objects

[FoamyGuy]

We recently changed argument names for initializing the ESP32SPI library to use the suffix _dio rather than _pin because the arguments need to be instantiated DigitalInOut objects, not microcontroller.Pin objects.

See: adafruit/Adafruit_CircuitPython_ESP32SPI#121

This library uses the same *_pin names for it's arguments which are also expected to the DigitalInOuts rather than Pins.

I think we'll want to change the names here and any other libraries that have _pin to keep things consistent across libraries.

[jposada202020]

Are we referring here to the example code. If that is the case I could make a PR for that. Thanks :)

[makermelissa]

I've been diving into the eInk code over the past few days and in the case of this library, pins should be used and not DigitalInOut object. Feel free to reopen if there's something you're seeing that I'm not.