intel/strago: Add method for Wifi regulatory domain

WRDD method in wifi.asl returns the regulatory domain code. This value 
is read from VPD in wifi_regulatory_domain() and saved to global nvs if
CONFIG_HAVE_REGULATORY_DOMAIN is enabled. It returns default code if 
CONFIG_HAVE_REGULATORY_DOMAIN is not enabled.

Original-Reviewed-on: https://chromium-review.googlesource.com/315131
Original-Tested-by: Hannah Williams <hannah.williams@intel.com>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>

Change-Id: I52e0a052d31f36c6dc04e6a0953456350e7d86c3
Signed-off-by: Hannah Williams <hannah.williams@intel.com>
Reviewed-on: https://review.coreboot.org/12746
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/intel/strago/dsdt.asl b/src/mainboard/intel/strago/dsdt.asl
index 84c0c24..f1248d8 100755
--- a/src/mainboard/intel/strago/dsdt.asl
+++ b/src/mainboard/intel/strago/dsdt.asl
@@ -43,7 +43,17 @@
 		/* Dynamic Platform Thermal Framework */
 		#include "acpi/dptf.asl"
 	}
+	Scope (\_SB.PCI0)
+	{
+		Device (RP03)
+		{
+			Name (_ADR, 0x001C0002)  // _ADR: Address
+			OperationRegion(RPXX, PCI_Config, 0x00, 0x10)
 
+			/* Wifi Device */
+			#include <soc/intel/common/acpi/wifi.asl>
+		}
+	}
 	#include "acpi/chromeos.asl"
 	#include <vendorcode/google/chromeos/acpi/chromeos.asl>