Add support for Pinephone-Pro
Based on a short discussion with Carlos at the Pine64-Dev channel, the following might be needed to get PPP support added:
-
toml config based on the gpio assignments for rk3399 -
make gpio code more flexible and adjust hardcoded parts for the a64 pinctrl labels, and gpiochip lines suitable to be similar useful in a way also for rk3399
Carlos might dedicate some time for it, however someone else might need to test his work ...