Swithc if_run.c to use a bitmap for debug levels rather than arbitrary values. This more closely matches other wifi drivers in the tree. The bitmap levels have been based closely on other drivers (primarily [u]rtwn(4)) in the hope that one day these can be unified into a shared wifi-debug framework.
This is the first step of several pieces of work I'm planning on doing with the run(4) driver. I may well adjust and refine some of the debug levels at a later date.