sb/intel: Factor out soc_fill_gnvs()

Name the common part of GNVS initialisation as soc_fill_gnvs().
It is also moved before the call to acpi_create_gnvs(), which
followup will rename to mainbord_fill_gnvs() to reflect that
implementation is under mb/.

Change-Id: Ic4cf1548b65a86212d6e45d460fcd23bb8036365
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48706
Reviewed-by: Lance Zhao
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/broadwell/pch/lpc.c b/src/soc/intel/broadwell/pch/lpc.c
index 60c65cb..7c6cf82 100644
--- a/src/soc/intel/broadwell/pch/lpc.c
+++ b/src/soc/intel/broadwell/pch/lpc.c
@@ -600,18 +600,22 @@
 	pch_lpc_add_io_resources(dev);
 }
 
+void soc_fill_gnvs(struct global_nvs *gnvs)
+{
+	/* Set unknown wake source */
+	gnvs->pm1i = -1;
+
+	/* CPU core count */
+	gnvs->pcnt = dev_count_cpu();
+}
+
 static void southcluster_inject_dsdt(const struct device *device)
 {
 	struct global_nvs *gnvs = acpi_get_gnvs();
 	if (!gnvs)
 		return;
 
-	/* Set unknown wake source */
-	gnvs->pm1i = -1;
-
-	/* CPU core count */
-	gnvs->pcnt = dev_count_cpu();
-
+	soc_fill_gnvs(gnvs);
 	acpi_create_gnvs(gnvs);
 	acpi_inject_nvsa();
 }