soc/amd/*/Kconfig: change ACPI_CPU_STRING to use hexadecimal CPU numbers

Both the AMD AGESA reference code and the default coreboot
ACPI_CPU_STRING use hexadecimal numbers in the ACPI CPU object names, so
change the ACPI_CPU_STRING format string in the both the Stoneyridge
Kconfig and the common non-CAR AMD SoC config Kconfig which covers all
other AMD SoCs in soc/amd. All platforms where the P state and C state
SSDT from binaryPI (Stoneyridge) or FSP (Picasso) was used in coreboot
before it got replaced by native code, had at most 8 cores/threads, so
the mismatch never became apparent.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9d6822c5df01786ee541ce90734b75ed1a761fca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75250
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/block/cpu/Kconfig

@@ -35,7 +35,7 @@ config CBFS_CACHE_SIZE
 
 config ACPI_CPU_STRING
 	string
-	default "C%03d"
+	default "C%03X"
 
 endif # SOC_AMD_COMMON_BLOCK_NONCAR
 

src/soc/amd/stoneyridge/Kconfig

@@ -268,7 +268,7 @@ config SMM_MODULE_STACK_SIZE
 
 config ACPI_CPU_STRING
 	string
-	default "P%03d"
+	default "P%03X"
 
 config ACPI_SSDT_PSD_INDEPENDENT
 	default n