Gandof: Add smart_usb_charge for gandof support smart_usb_charge

BUG=chrome-os-partner:43175
TEST=Ran FAFT on gandof

Change-Id: Ibda258534aaaa3f772638c1aa45934f9f9528732
Signed-off-by: David Huang <David.Huang@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/289836
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Commit-Queue: Saurabh Madan <ssmadan@chromium.org>
Trybot-Ready: Saurabh Madan <ssmadan@chromium.org>
Tested-by: Saurabh Madan <ssmadan@chromium.org>
diff --git a/server/cros/faft/config/gandof.py b/server/cros/faft/config/gandof.py
index 296dccc..789aae4 100644
--- a/server/cros/faft/config/gandof.py
+++ b/server/cros/faft/config/gandof.py
@@ -9,4 +9,7 @@
 
 class Values(auron.Values):
     """Inherit overrides from auron."""
-    pass
+    ec_capability = ['adc_ectemp', 'battery', 'charging',
+                     'keyboard', 'lid', 'x86', 'usb', 'peci',
+                     'smart_usb_charge']
+