Add builder support for daisy factory-2569.B

BUG=chromium:136383
TEST=cbuildbot_config_unittest

Change-Id: Ib3a6ef110b049e0bd327bb896e5e480b7d433d34
Reviewed-on: https://gerrit.chromium.org/gerrit/27077
Reviewed-by: Eric Blake <eblake@chromium.org>
Tested-by: Eric Blake <eblake@chromium.org>
diff --git a/buildbot/cbuildbot_config.py b/buildbot/cbuildbot_config.py
index 871711e..575ee32 100755
--- a/buildbot/cbuildbot_config.py
+++ b/buildbot/cbuildbot_config.py
@@ -714,10 +714,11 @@
 internal_incremental = internal.derive(incremental,
                                        overlays=constants.BOTH_OVERLAYS)
 
-internal_pfq_branch.add_config('x86-alex-pre-flight-branch',
+internal_pfq_branch.add_config('daisy-pre-flight-branch',
+  arm,
   master=True,
   push_overlays=constants.BOTH_OVERLAYS,
-  boards=['x86-alex'],
+  boards=['daisy'],
 )
 
 internal_arm_paladin = internal_paladin.derive(arm)