soc/amd/picasso/acpi/cpu: move WAL1 method that calls ALIB to common

TEST=Mandolin still boots into Linux and there's no ACPI warning in
dmesg.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I7e6d38ebeae5e55a4a65930b989838532ab9c446
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53920
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/acpi/alib.asl

@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/alib.h>
+
+/* The ALIB method object is defined in an SSDT */
+External(\_SB.ALIB, MethodObj)
+
+/* Wrapper method that calls ALIB function 1 to report current AC/DC state. */
+Method (WAL1)
+{
+	/* Send ALIB Function 1 the AC/DC state */
+	Local0 = Buffer (0x03) {}
+	CreateWordField (Local0, 0, F1SZ)
+	CreateByteField (Local0, 2, F1DA)
+
+	/* First argument is size i.e. 3 bytes */
+	F1SZ = 3
+
+	/*
+	 * Second argument is power state i.e. AC or DC.
+	 * ALIB expects AC = 0, DC = 1.
+	 * PWRS reports AC = 1, DC = 0.
+	 *
+	 * Hence, need to invert the state of PWRS.
+	 */
+	F1DA = \PWRS ^ 1
+
+	Printf ("ALIB call: func 1 params %o", Local0)
+	\_SB.ALIB (ALIB_FUNCTION_REPORT_AC_DC_STATE, Local0)
+}

src/soc/amd/picasso/acpi/cpu.asl

@@ -1,32 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <amdblocks/alib.h>
+#include <soc/amd/common/acpi/alib.asl>
-
-/*
- * Wrapper method that calls ALIB function 1 to report current AC/DC state.
- */
-Method (WAL1)
-{
-	/* Send ALIB Function 1 the AC/DC state */
-	Local0 = Buffer (0x03) {}
-	CreateWordField (Local0, 0, F1SZ)
-	CreateByteField (Local0, 2, F1DA)
-
-	/* First argument is size i.e. 3 bytes */
-	F1SZ = 3
-
-	/*
-	 * Second argument is power state i.e. AC or DC.
-	 * ALIB expects AC = 0, DC = 1.
-	 * PWRS reports AC = 1, DC = 0.
-	 *
-	 * Hence, need to invert the state of PWRS.
-	 */
-	F1DA = \PWRS ^ 1
-
-	Printf ("ALIB call: func 1 params %o", Local0)
-	\_SB.ALIB (ALIB_FUNCTION_REPORT_AC_DC_STATE, Local0)
-}
 
 Method (PNOT)
 {

src/soc/amd/picasso/acpi/sb_pci0_fch.asl

@@ -2,8 +2,6 @@
 
 #include <arch/ioapic.h>
 
-External(\_SB.ALIB, MethodObj)
-
 /* System Bus */
 /*  _SB.PCI0 */