x201: Add TPM declaration.

This allows to deactivate TPM on X201.

Change-Id: Ic085db6cc2c57668e7a4fdbc7440735c806cc256
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10278
Tested-by: build bot (Jenkins)
Reviewed-by: Philipp Deppenwiese <zaolin@das-labor.org>
diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb
index d892926..f87ab10 100644
--- a/src/mainboard/lenovo/x201/devicetree.cb
+++ b/src/mainboard/lenovo/x201/devicetree.cb
@@ -153,6 +153,9 @@
 					# DLPC, not connected
 					device pnp 164e.19 off end
 				end
+				chip drivers/pc80/tpm
+					device pnp 0c31.0 on end
+				end
 			end
 			device pci 1f.2 on # IDE/SATA
 				subsystemid 0x17aa 0x2168