Change the path of SAFT libraries.

Since the CL: https://gerrit.chromium.org/gerrit/11176
which move SAFT from raw image to test image.
The test image is installed under /usr/local/.

BUG=chromium-os:19451
TEST=run FAFT on ARM device:
    run_remote_tests.sh --remote=$REMOTE_IP -a \
         "servo_vid=0x18d1 servo_pid=0x5001" firmware_TryFwB

Change-Id: I49caa57ce226123803eb418e26daeaa6d5fe0067
Reviewed-on: https://gerrit.chromium.org/gerrit/11305
Reviewed-by: Rong Chang <rongchang@chromium.org>
Commit-Ready: Tom Wai-Hong Tam <waihong@chromium.org>
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
diff --git a/client/cros/faft_client.py b/client/cros/faft_client.py
index 09a87ab..3ffb477 100644
--- a/client/cros/faft_client.py
+++ b/client/cros/faft_client.py
@@ -17,7 +17,7 @@
 from SimpleXMLRPCServer import SimpleXMLRPCServer
 
 # Import libraries from SAFT.
-sys.path.append('/usr/sbin/firmware/saft')
+sys.path.append('/usr/local/sbin/firmware/saft')
 import chromeos_interface
 import flashrom_handler
 import kernel_handler