soc/amd: Move acpi_fill_mcfg into common/blocks/acpi

This is common between stoney, picasso, and cezanne.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I5fb40e8c6817773212c5fbd66c5c06bd2bae1eda
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50556
Reviewed-by: Mathew King <mathewk@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/common/block/acpi/tables.c b/src/soc/amd/common/block/acpi/tables.c
index fd1f37f..f941bc9 100644
--- a/src/soc/amd/common/block/acpi/tables.c
+++ b/src/soc/amd/common/block/acpi/tables.c
@@ -11,3 +11,15 @@
 {
 	return acpi_write_hpet(device, current, rsdp);
 }
+
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+
+	current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)current,
+					     CONFIG_MMCONF_BASE_ADDRESS,
+					     0,
+					     0,
+					     CONFIG_MMCONF_BUS_NUMBER - 1);
+
+	return current;
+}