soc/amd/mendocino/acpi: rework C state info table handling

Rework the way the C state info is generated before it gets passed to
acpigen_write_CST_package in generate_cpu_entries by separating the data
from the code. For this, the newly introduced common get_cstate_info
function is used. Separating the data from the code will eventually
allow moving generate_cpu_entries to the common AMD code.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I3669c66094f0137081888ebdd1af838e2ea269b5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73501
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
diff --git a/src/soc/amd/mendocino/Kconfig b/src/soc/amd/mendocino/Kconfig
index 50c71de..f48d8dd 100644
--- a/src/soc/amd/mendocino/Kconfig
+++ b/src/soc/amd/mendocino/Kconfig
@@ -36,6 +36,7 @@
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO
 	select SOC_AMD_COMMON_BLOCK_ACPI_ALIB
 	select SOC_AMD_COMMON_BLOCK_ACPI_CPPC
+	select SOC_AMD_COMMON_BLOCK_ACPI_CPU_POWER_STATE
 	select SOC_AMD_COMMON_BLOCK_ACPI_GPIO
 	select SOC_AMD_COMMON_BLOCK_ACPI_IVRS
 	select SOC_AMD_COMMON_BLOCK_AOAC