Buffet: Move buffet over to platform2 from src/platform/buffet.

This change also open-sources buffet. The only change in this CL
is the removal of the Makefile and addition of the buffet.gyp file.

BUG=chromium:355180
TEST=USE=buffet emerge-gizmo platform2

Change-Id: Ibf8d3ac3f38313f82a9c07d79932b6f30130f9c5
diff --git a/buffet/buffet.conf b/buffet/buffet.conf
new file mode 100644
index 0000000..7c3ee8c
--- /dev/null
+++ b/buffet/buffet.conf
@@ -0,0 +1,12 @@
+# Copyright 2014 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.
+
+description     "Brillo Buffet Service"
+author          "chromium-os-dev@chromium.org"
+
+start on starting system-services
+stop on stopping system-services
+respawn
+
+exec buffet