tools/power/cpupower: Fix Pstate frequency reporting on AMD Family 1Ah CPUs

[Kim Naru]

cpupower utility reports incorrect pstates in one portion of its output on Turin.

root@volcano-ef0fhost:/home/amd# cpupower frequency-info
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: Cannot determine or is not supported.
  hardware limits: 1.50 GHz - 3.25 GHz
  available frequency steps: 1.90 GHz, 1.70 GHz, 1.50 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 1.50 GHz and 1.90 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: 1.50 GHz (asserted by call to hardware)
  boost state support:
    Supported: yes
    Active: yes
    Boost States: 0
    Total States: 3
    Pstate-P0: 24800MHz
    Pstate-P1: 16800MHz
    Pstate-P2: 8800MHz

This issue occurs both with the distro cpufreq utility that comes with Ubuntu 22.04 5.15.0.87 kernel-tools package as well as the upstream cpufreq utility.

The fix is commit 43cad521c6d :

tools/power/cpupower: Fix Pstate frequency reporting on AMD Family 1Ah CPUs

[Thibf (thibf)]

Fix committed for noble:linux part of https://bugs.launchpad.net/bugs/2078304, should be released end of October.