soc/intel/cannonlake: Add dummy ACPI DSDT table

A dummy DSDT table will be created for cannonlake.

Change-Id: Ia435f2a03982313c6b0c63ac25668a3300d08793
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/21279
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/mainboard/intel/cannonlake_rvp/Kconfig

@@ -4,6 +4,7 @@ config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select BOARD_ROMSIZE_KB_16384
 	select SOC_INTEL_CANNONLAKE
+	select HAVE_ACPI_TABLES
 	select GENERIC_SPD_BIN
 
 config MAINBOARD_DIR

src/mainboard/intel/cannonlake_rvp/dsdt.asl

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2015 Google Inc.
+ * Copyright (C) 2017 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+DefinitionBlock(
+	"dsdt.aml",
+	"DSDT",
+	0x05,		// DSDT revision: ACPI v5.0
+	"COREv4",	// OEM id
+	"COREBOOT",	// OEM table id
+	0x20110725	// OEM revision
+)
+{
+	// global NVS and variables
+	#include <soc/intel/cannonlake/acpi/globalnvs.asl>
+
+	Scope (\_SB) {
+	}
+
+#if IS_ENABLED(CONFIG_CHROMEOS)
+	// Chrome OS specific
+	#include <vendorcode/google/chromeos/acpi/chromeos.asl>
+#endif
+}