soc/amd/picasso/acpi: move SoC-common code from dsdt.asl to soc.asl

To avoid code duplication and to also bring the mainboards using the
Picasso SoC more in line with Cezanne and newer, factor out the SoC-
specific code from the mainboard's dsdt.asl files to the SoC's soc.asl.

TEST=Timeless builds result in identical images for Bilby, Mandolin, and
Zork/Morphius

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id4ed3a3d3cb55c8b3b474c66a7c1700e24fe908e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79653
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
diff --git a/src/mainboard/amd/bilby/dsdt.asl b/src/mainboard/amd/bilby/dsdt.asl
index dd42608..57ee5d6 100644
--- a/src/mainboard/amd/bilby/dsdt.asl
+++ b/src/mainboard/amd/bilby/dsdt.asl
@@ -14,25 +14,7 @@
 	)
 {	/* Start of ASL file */
 	#include <acpi/dsdt_top.asl>
-	#include <globalnvs.asl>
 
-	/* Power state notification to ALIB */
-	#include <pnot.asl>
-
-	/* Contains the supported sleep states for this chipset */
-	#include <soc/amd/common/acpi/sleepstates.asl>
-
-	/* Contains _SWS methods */
-	#include <soc/amd/common/acpi/acpi_wake_source.asl>
-
-	/* System Bus */
-	Scope(\_SB) { /* Start \_SB scope */
-		/* global utility methods expected within the \_SB scope */
-		#include <arch/x86/acpi/globutil.asl>
-
-		/* Describe the SOC */
-		#include <soc.asl>
-
-	} /* End \_SB scope */
+	#include <soc.asl>
 }
 /* End of ASL file */