Thinkpad: Enable Battery events

Enable the following events for battery objects on
Thinkpad X60/T60:

24: BAT0 critical
25: BAT1 critical
4A: BAT0 present
4B: BAT0 state change
4C: BAT1 present
4D: BAT1 state change

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Acked-by: Sven Schnelle <svens@stackframe.org>

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6549 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/mainboard/lenovo/t60/devicetree.cb b/src/mainboard/lenovo/t60/devicetree.cb
index da1cb43..5419d71 100644
--- a/src/mainboard/lenovo/t60/devicetree.cb
+++ b/src/mainboard/lenovo/t60/devicetree.cb
@@ -130,6 +130,7 @@
 					register "event4_enable" = "0xf4"
 					register "event5_enable" = "0x3c"
 					register "event6_enable" = "0x80"
+					register "eventc_enable" = "0x3c"
 
 					register "wlan_enable" = "0x01"
 					register "trackpoint_enable" = "0x03"