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Match the platform by CPU model and attach on acpi with PWRM at 0xfe000000; the PMC is not PCI-enumerable on these platforms. SLP_S0_RES offsets and granularities follow each generation's PCH Family Datasheet Volume 2. A mismatch between the LPIT residency counter address and SLP_S0_RES is reported on attach. Reviewed by: olce, adrian Differential Revision: https://reviews.freebsd.org/D59596