The suspend/resume code is a sticky mess of MI, MD, and ACPI sequencing.

The suspend/resume code is a sticky mess of MI, MD, and ACPI sequencing.
This splits out the MI sequencing, backing it with per-architecture helper
functions.  Further steps will be neccesary because ACPI and MD are too
tightly coupled, but soon we'll be able to use this code for more architectures
(which depends on figuring out the lowest-level cpu sleeping method)
ok kettenis