Add gpio(4) man page to attempt to document the current hints based setup of

pin outputs, functions and setup.

Add cross reference in gpioctl(8) for people to find.

This is by no means complete and really only covers gpioled(4) and the
Atheros based systems who expose a few extra hints at boot time.

This should be updated by developers who know more about this system than
I and viewed as the beginning of documentation, not the end.

Reviewed by:	adrian
Approved by:	re (joel)
MFC after:	2 weeks

0 files changed, 0 insertions, 0 deletions