soc/amd: Move fadt device tree settings into common_config

This is ACPI specific config that applies to all the AMD SoCs. Stoney
doesn't currently use this, but we can add that functionality later.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I0be7d917d7c5ba71347aa646822a883e2cf55743
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50557
Reviewed-by: Mathew King <mathewk@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb b/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb
index 8bc87f7..c79f362 100644
--- a/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb
+++ b/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb
@@ -2,9 +2,9 @@
 chip soc/amd/picasso
 
 	# Set FADT Configuration
-	register "fadt_boot_arch" = "ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042"
+	register "common_config.fadt_boot_arch" = "ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042"
 	# See table 5-34 ACPI 6.3 spec
-	register "fadt_flags" = "ACPI_FADT_SLEEP_BUTTON | ACPI_FADT_SEALED_CASE"
+	register "common_config.fadt_flags" = "ACPI_FADT_SLEEP_BUTTON | ACPI_FADT_SEALED_CASE"
 
 	register "acp_pin_cfg" = "I2S_PINS_I2S_TDM"
 	register "acp_i2s_wake_enable" = "0"