grandteton: Add flashy support

Summary:
As title, add capability in flashy to support GT.
TBD, once we are in DVT, we need to convert this
to flash.FlashCpVboot.

Test Plan: Build ephemeral fbpkg and test out oobgrader. Ensure it upgrades flash1.

Reviewed By: kawmarco

fbshipit-source-id: ba1c4404eb5b34cdfba3b5647ef1ec4d104e6380

tools/flashy/flash_procedure/flash_grandteton.go

@@ -0,0 +1,29 @@
+/**
+ * Copyright 2020-present Facebook. All Rights Reserved.
+ *
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ */
+
+package flash_procedure
+
+import (
+	"github.com/facebook/openbmc/tools/flashy/lib/flash"
+	"github.com/facebook/openbmc/tools/flashy/lib/step"
+)
+
+func init() {
+	step.RegisterStep(flash.FlashCp)
+}