Introduce new useful GPIO macros to:
- read the levels of some port pins,
- write the levels of some port pins (pass bit-field value to be set),
- clear the interrupt flags for some port pins.
These macros are cleaner and less error prone than raw register access code
copied all over the place.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
923f161b7b