soc/amd/common/acpi/cpu_power_state: introduce and use get_pstate_0_reg

On the Zen-based CPUs, P state 0 corresponds to the first P state MSR,
but on Stoneyridge this isn't the case. Introduce get_pstate_0_reg that
returns 0 for all non-CAR AMD CPUs.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Icc11e5b6099d37edb934e66fe329d8013d25f68d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74021
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions