soc/apollolake: Add skeleton ACPI entry

Change-Id: Ib127af5392ca2b349480f5b21fad2186b444d7e6
Signed-off-by: Lance Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/13348
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/apollolake/acpi.c

@@ -0,0 +1,22 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Intel Corp.
+ * (Written by Lijian Zhao <lijian.zhao@intel.com> for Intel Corp.)
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <arch/acpi.h>
+
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	return 0;
+}
+unsigned long acpi_fill_madt(unsigned long current)
+{
+	return 0;
+}