hwpmc: Add Atom Goldmont microarchitecture support.

[dgr_semihalf.com]

Summary

Recognize new micro-architecture in hwpmc driver. Based on Intel
document 325462-071US. Tested with tools/test/hwpmc/pmctest.py
on Atom E3930.

Only list Apollo Lake CPU ID (0x5C) as Denverton (0x5F)
was not tested.

[kib]

I do suggest to list all CPUIDs for family, even if not tested. At best it would just work, at worst you do get the user report that something gone wrong. Otherwise the CPU is unsupported for more time.