mainboard/lenovo: Add Lenovo Thinkpad T520 support

Short list of known issues for this patchset:

* Suspend/Resume - does not work
* Combi pci card for SD/MMC card reader with IEEE1394 - not found
* Shutdown - sometimes does not work as expected
* At least mysterious harddrive i/o

Change-Id: Iaba8d1f5e471cfeca20d82f4e1b416641e1f2ae9
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: http://review.coreboot.org/5672
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
diff --git a/src/mainboard/lenovo/t520/thermal.h b/src/mainboard/lenovo/t520/thermal.h
new file mode 100644
index 0000000..23bdb76
--- /dev/null
+++ b/src/mainboard/lenovo/t520/thermal.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
+ * Copyright (C) 2014 Vladimir Serbinenko
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef T520_THERMAL_H
+#define T520_THERMAL_H
+
+	/* Temperature which OS will shutdown at */
+	#define CRITICAL_TEMPERATURE	100
+
+	/* Temperature which OS will throttle CPU */
+	#define PASSIVE_TEMPERATURE	90
+
+#endif /* T520_THERMAL_H */