previous patch) and this MUST be of that size, otherwise the tables
won't be found.
* powernow_k8.c moved into x86/x86, it should work both i386 and amd64.
* Added more DPRINTFs needed to found the first problem.
* Create "machdep.powernow.frequency" again, I can't remember why I
removed frequency... it should work with estd now.
* Do not try to call k[78]_powernow_init() if cpu is not AMD (thanks
to christos).
And more things I can't remember, but this time it will work in
Athlon 64 cpus and it won't crash in EM64T cpus.
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