soc/braswell: Add method for Wifi regulatory domain

Get the WRDD domain code from VPD and put it in global nvs.
WRDD method in wifi.asl returns this value from global nvs.
This wifi.asl should be included in dsdt.asl under the root port where wifi
module resides.

Original-Reviewed-on: https://chromium-review.googlesource.com/314373
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Pratikkumar V Prajapati <pratikkumar.v.prajapati@intel.com>
Original-Commit-Queue: Hannah Williams <hannah.williams@intel.com>

Change-Id: I809d28f10e80681471a785e604df102fb943a983
Signed-off-by: fdurairx <felixx.durairaj@intel.com>
Signed-off-by: Hannah Williams <hannah.williams@intel.com>
Reviewed-on: https://review.coreboot.org/12745
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/soc/intel/braswell/acpi.c

@@ -44,6 +44,7 @@
 #include <string.h>
 #include <types.h>
 #include <vendorcode/google/chromeos/gnvs.h>
+#include <wrdd.h>
 
 #define MWAIT_RES(state, sub_state)                         \
 	{                                                   \
@@ -523,6 +524,13 @@ void southcluster_inject_dsdt(device_t device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
+		/* Fill in the Wifi Region id */
+		if (IS_ENABLED(CONFIG_HAVE_REGULATORY_DOMAIN)) {
+			gnvs->cid1 = wifi_regulatory_domain();
+		} else {
+
+			gnvs->cid1 = WRDD_DEFAULT_REGULATORY_DOMAIN;
+		}
 		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);