[PATCH 15/15] Revert "x86: default to reboot via ACPI"

[Len Brown]

> > My expectation is that with the ACPI default, our problem
> > is working around a finite list of old machines that don't work;
> > while with the default KBD, our problem is working around
> > a potentially unbounded list of yet to be shipped machines
> > who may only be tested and work using the ACPI method.
> 
> Does Windows default to using the ACPI method now?

That is my guess, based on the fact that we've seen
newer machines that don't reboot w/o using the ACPI reset reg.

-Len