mpacpi broken (again) on -current

["Jared D. McNeill" <jmcneill%invisible.ca@localhost>]

I can no longer boot my Eee PC 701 on -current with the latest mpacpi.c, 
reverting to mpacpi 1.58 as suggested by others works fine. The kernel 
stops booting after it probes hard disks, presumably during USB probe. I 
am able to break to debugger and the CPU appears to be sitting in the idle 
loop, so it's likely that USB interrupts aren't getting routed properly.

Jared