cpu,nb/amd/pi/00730F01: dynamically generate CPU devices

Instead of having the maximum number of possible CPU objects defined in
the DSDT, dynamically generate the number of needed CPU devices in the
SSDT like it's done on all other x86 platforms in coreboot.

TEST=APU2 still boots and Linux doesn't show any ACPI errors with this
patch applied and it prints "ACPI: \_SB_.P000: Found 2 idle states".

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id6f057ad130a27b371722fa66ce0a982afc43c6c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73073
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/cpu/amd/pi/00730F01/Kconfig

@@ -5,3 +5,11 @@ config CPU_AMD_PI_00730F01
 	select X86_AMD_FIXED_MTRRS
 	select SUPPORT_CPU_UCODE_IN_CBFS
 	select MICROCODE_BLOB_UNDISCLOSED
+
+if CPU_AMD_PI_00730F01
+
+config ACPI_CPU_STRING
+	string
+	default "\\_SB.P%03d"
+
+endif # CPU_AMD_PI_00730F01

src/cpu/amd/pi/00730F01/acpi/cpu.asl

@@ -1,48 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-/*
- * Processor Object
- *
- */
-Scope (\_SB) {	/* define processor scope */
-
-	Device (P000) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 0)
-	}
-
-	Device (P001) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 1)
-	}
-
-	Device (P002) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 2)
-	}
-
-	Device (P003) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 3)
-	}
-
-	Device (P004) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 4)
-	}
-
-	Device (P005) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 5)
-	}
-
-	Device (P006) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 6)
-	}
-
-	Device (P007) {
-	Name(_HID, "ACPI0007")
-	Name(_UID, 7)
-	}
-} /* End _SB scope */