set default value to True

Change-Id: I6681e7dcb5ce23c0fc4f2d432e002875801829b2
diff --git a/utils/python/controllers/android_device.py b/utils/python/controllers/android_device.py
index b72c020..ea71ff6 100644
--- a/utils/python/controllers/android_device.py
+++ b/utils/python/controllers/android_device.py
@@ -60,7 +60,7 @@
     pass
 
 
-def create(configs, use_vts_agent=true):
+def create(configs, use_vts_agent=True):
     """Creates AndroidDevice controller objects.
 
     Args: