Add support Orange PI CM4

[kiricheglov]

Hi! I need to connect my ADS1115 to my Orange PI CM4, but i give issue with my board

[caternuson]

This is not an issue with this library.

Support for the OrangePiCM4 needs to be added to Blinka, which is a separate library. There is an existing issue for that here:
adafruit/Adafruit_Blinka#753