soc/amd: factor out ACPI ALIB function numbers to common code

The ACPI ALIB function numbers are defined in the AMD Generic
Encapsulated Software Architecture (AGESA™) Interface Specification
(document #55483).

TEST=Timeless build stays the same for Mandolin (Picasso) and Gardenia
(Stoneyridge).

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I290ef0db32c65ebb2bbbe4f65db4df772b884161
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53915
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/common/block/include/amdblocks/alib.h b/src/soc/amd/common/block/include/amdblocks/alib.h
new file mode 100644
index 0000000..a59ba8b
--- /dev/null
+++ b/src/soc/amd/common/block/include/amdblocks/alib.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_COMMON_ALIB_H
+#define AMD_COMMON_ALIB_H
+
+#define ALIB_FUNCTION_REPORT_AC_DC_STATE		0x1
+#define ALIB_FUNCTION_DYNAMIC_POWER_THERMAL_CONFIG	0xc
+
+#endif /* AMD_COMMON_ALIB_H */