cpu/amd/pi/00730f01/Kconfig: use hexadecimal CPU number in ACPI

To match the rest of coreboot, also change this ACPI_CPU_STRING Kconfig
setting to use hexadecimal CPU numbers for the ACPI CPU objects. Since
this SoC has a maximum of 4 cores, this change will make no difference
in the runtime behavior.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I58f9c4672f34de0defafc300d2d291f4ad6196ff
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75251
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/cpu/amd/pi/00730F01/Kconfig b/src/cpu/amd/pi/00730F01/Kconfig
index af56c96..1fffe37 100644
--- a/src/cpu/amd/pi/00730F01/Kconfig
+++ b/src/cpu/amd/pi/00730F01/Kconfig
@@ -10,6 +10,6 @@
 
 config ACPI_CPU_STRING
 	string
-	default "P%03d"
+	default "P%03X"
 
 endif # CPU_AMD_PI_00730F01