Fix Leon lid_open control issue from x86_ec_common consolidation

Leon uses emulated lid_open from ec so needs to enable lid_open ec
driver.

BUG=chromium:26829
TEST=local servo test with Leon.
     dut-control lid_open:yes/no and check working as intended

Change-Id: I1f5ea2231c9f7c803735786cae7d1082dc4f6c3d
Reviewed-on: https://chromium-review.googlesource.com/191687
Reviewed-by: Vic Yang <victoryang@chromium.org>
Commit-Queue: Yung Leem <yungleem@chromium.org>
Tested-by: Yung Leem <yungleem@chromium.org>
diff --git a/servo/data/servo_leon_overlay.xml b/servo/data/servo_leon_overlay.xml
index d5a5527..e97adf0 100644
--- a/servo/data/servo_leon_overlay.xml
+++ b/servo/data/servo_leon_overlay.xml
@@ -5,4 +5,11 @@
   <include>
     <name>x86_ec_common.xml</name>
   </include>
+  <!-- ******** Controls ******** -->
+  <control>
+    <name>lid_open</name>
+    <doc>emulated lid switch on ec</doc>
+    <params subtype="lid_open" interface="7" drv="ec" map="yesno"
+    clobber_ok=""></params>
+  </control>
 </root>