interrupt-only GPIOs. Honor this, and allow interrupt attachment, but not read/write access for such devices. Reported by: Niels Eliasen
and 3rd license clause. Submitted by: Marco Trillo
G3 as well as the internal ADB keyboard and mice in PowerBooks and iBooks. This also brings in Mac GPIO support, for which we should eventually have a better interface. Obtained from: NetBSD (CUDA and PMU drivers)