lenovo: fix smi gpe + wakeup pin for t420s t520 t530 x220 x230

Set correct gpio routing and enable bits for EC SMI gpio and EC WAKE gpio.
Verified with schematics.

Change-Id: Ie3b98c4456a870c881e7663b19eb8ca8e5564c5c
Signed-off-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-on: http://review.coreboot.org/8358
Tested-by: build bot (Jenkins)
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/mainboard/lenovo/t530/devicetree.cb b/src/mainboard/lenovo/t530/devicetree.cb
index c44f927..6b769b0 100644
--- a/src/mainboard/lenovo/t530/devicetree.cb
+++ b/src/mainboard/lenovo/t530/devicetree.cb
@@ -50,7 +50,7 @@
 			#  2 SCI (if corresponding GPIO_EN bit is also set)
 			register "alt_gp_smi_en" = "0x0000"
 			register "gpi1_routing" = "2"
-			register "gpi8_routing" = "2"
+			register "gpi13_routing" = "2"
 
 			# Enable SATA ports 0 (HDD bay) & 1 (ODD bay) & 2 (mSATA) & 3 (eSATA) & 4 (dock)
 			register "sata_port_map" = "0x3f"