google/kahlee: Add SMI apmc handler

Forward the apmc call to the chromeec.

Change-Id: Id724c1abf15617ad1ba28f2c0247455b014c1867
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/21880
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/mainboard/google/kahlee/Makefile.inc

@@ -34,3 +34,5 @@ ramstage-y += OemCustomize.c
 
 verstage-y += chromeos.c
 verstage-y += ec.c
+
+smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c

src/mainboard/google/kahlee/smihandler.c

@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2016 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; 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.
+ */
+
+#include <arch/acpi.h>
+#include <cpu/x86/smm.h>
+#include <ec/google/chromeec/smm.h>
+#include <soc/smi.h>
+#include "ec.h"
+
+int mainboard_smi_apmc(u8 apmc)
+{
+	if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC))
+		chromeec_smi_apmc(apmc, MAINBOARD_EC_SCI_EVENTS,
+					MAINBOARD_EC_SMI_EVENTS);
+	return 0;
+}