add touchpad-tests into autotest-deps

BUG=chromium-os:37644
TEST=emerge-link autotest-deps should build successfully and setup
  touchpad-tests under
  /build/link/usr/local/autotest/client/deps/touchpad-tests

Change-Id: I97a2fb544423d590df718cf50e9af390f98e2d96
Signed-off-by: Chung-yih Wang <cywang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/44146
Reviewed-by: Joseph Shyh-In Hwang <josephsih@chromium.org>
diff --git a/client/deps/touchpad-tests/touchpad-tests.py b/client/deps/touchpad-tests/touchpad-tests.py
new file mode 100755
index 0000000..5dbbc08
--- /dev/null
+++ b/client/deps/touchpad-tests/touchpad-tests.py
@@ -0,0 +1,25 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import logging
+import os
+
+# Setup autotest_lib path by importing common.
+import common
+from autotest_lib.client.bin import utils
+
+
+version = 1
+
+
+def setup(setup_dir):
+    """Stores a copy of the chromite buildbot source code for use on a DUT.
+
+    @param setup_dir: the target directory
+
+    """
+    logging.info('setup(%s)', setup_dir)
+
+pwd = os.getcwd()
+utils.update_version(os.getcwd(), True, version, setup, pwd)