Change tegra2 binary builder to use board=tegra2_dev-board instead of tegra2.

bin/cbuildbot_config.py

 # Copyright (c) 2010 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.
 
 """Dictionary of configuration types for cbuildbot.
 
 Each dictionary entry is in turn a dictionary of config_param->value.
 
 config_param's:
 board -- The board of the image to build.
@@ skipping 82 matching lines @@
 config['x86_pineview_bin'] = {
   'board' : 'x86-pineview',
   'uprev' : True,
   'master' : False,
   'important' : False,
   'unittests': True,
   'rev_overlays': 'public',
   'push_overlays': None,
 }
 config['arm_tegra2_bin'] = {
-  'board' : 'tegra2',
+  'board' : 'tegra2_dev-board',
   'uprev' : True,
   'master' : False,
   'important' : False,
   'unittests' : False,
   'rev_overlays': 'public',
   'push_overlays': None,
 }
 config['arm_generic_bin'] = {
   'board' : 'arm-generic',
   'uprev' : True,
   'master' : False,
   'important' : False,
   'unittests' : False,
   'rev_overlays': 'public',
   'push_overlays': None,
 }