flashy: support fby35

Summary: Add flash procedure for Yosemite v3.5

Test Plan:
[[email protected] ~/local/openbmc/tools/flashy] ./build.sh && ./build_dev.sh && go test
2022/09/30 08:59:50 Running command '/home/garnermic/local/openbmc/tools/flashy/scripts/calculate_test_coverage.sh' with 30s timeout
2022/09/30 08:59:54 stdout: 95.3
2022/09/30 08:59:54 Command '/home/garnermic/local/openbmc/tools/flashy/scripts/calculate_test_coverage.sh' exited with code 0 after 3.733883287s
PASS
ok      github.com/facebook/openbmc/tools/flashy    3.741s

Reviewed By: williamspatrick

fbshipit-source-id: c1fbe7852481933430b6724109f6b8c54127e9d8

Author: garnermic

tools/flashy/flash_procedure/flash_fby35.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.FlashCpVboot)
+}