mainboard/lenovo/{t430s,t420s,t520,t530,x220}: Add TPM 1.2 mainboard support

Every Lenovo Thinkpad includes a Trusted Platform Module, so we can enable
it for the sandy-/ivybridge platforms.

Change-Id: Icda443ba88c2a49a0033014ce7710dd607fa15dc
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: http://review.coreboot.org/10411
Tested-by: build bot (Jenkins)
Reviewed-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl
index 42165a1..c8591a4 100644
--- a/src/mainboard/lenovo/t520/dsdt.asl
+++ b/src/mainboard/lenovo/t520/dsdt.asl
@@ -52,6 +52,14 @@
 		}
 	}
 
+	/*
+	 * LPC Trusted Platform Module
+	 */
+	Scope (\_SB.PCI0.LPCB)
+	{
+		#include <drivers/pc80/tpm/acpi/tpm.asl>
+	}
+
 	/* Chipset specific sleep states */
 	#include <southbridge/intel/bd82x6x/acpi/sleepstates.asl>
 }