soc/amd/common/cpu/tsc: factor out family-specific get_pstate_core_freq

Factor out the get_pstate_core_freq function from the SoC's acpi.c files
to both avoid duplication and to also be able to use the same function
in the TSC frequency calculation in a follow-up patch. The family 17h
and 19h SoCs use the same frequency encoding in the P state MSRs while
the family 1Ah SoCs use a different encoding. The family 15h and 16h
SoCs use another encoding, but since this isn't implemented in
Stoneyridge's acpi.c, this will be added in a follow-up patch.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I8619822c2c61e06ae5db86896d5323c9b105b25b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74010
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions