Bob: Add the servo overlay

Inherit gru configuration.

BUG=chrome-os-partner:58795
TEST='cros_workon --host start hdctools'
     'sudo emerge hdctools'
     'sudo servod --board=bob'

Change-Id: I6b84cb7d6d64ac2576606b6834dc8031145aedca
Signed-off-by: Shasha Zhao <Sarah_Zhao@asus.com>
Reviewed-on: https://chromium-review.googlesource.com/409811
Reviewed-by: Philip Chen <philipchen@chromium.org>
diff --git a/servo/data/servo_bob_overlay.xml b/servo/data/servo_bob_overlay.xml
new file mode 100644
index 0000000..4805e27
--- /dev/null
+++ b/servo/data/servo_bob_overlay.xml
@@ -0,0 +1,5 @@
+<root>
+  <include>
+    <name>servo_gru_overlay.xml</name>
+  </include>
+</root>