From: Linus Walleij <linus.walleij@xxxxxxxxxx>
This updates the GPIO range documentation with the API changes
for sparse/random/arbitrary pin-to-GPIO mappings.
For all functionalities dealing with pin biasing, pin muxing etc, the pin
-controller subsystem will subtract the range's .base offset from the passed
-in gpio number, and add the ranges's .pin_base offset to retrive a pin number.
-After that, the subsystem passes it on to the pin control driver, so the driver
+controller subsystem will look up the corresponding pin number from the passed
+in gpio number, and use the ranges internals to retrive a pin number. After