note tahan, morgan800cc as a BMC-lite
Summary:
Otherwise we will accidentally start the watchdog and reset while wiping the
second chip:
https://www.internalfb.com/intern/provisioning/asset_details/911771887375906
XXX This needs to be table driven off platforms.thrift.
Test Plan:
```
0 ~/local/openbmc/tools/flashy $ ./build.sh && ./build_dev.sh && go test ./... && echo it works
ok github.com/facebook/openbmc/tools/flashy (cached)
ok github.com/facebook/openbmc/tools/flashy/checks_and_remediations/bletchley 0.006s
? github.com/facebook/openbmc/tools/flashy/flash_procedure [no test files]
? github.com/facebook/openbmc/tools/flashy/lib/logger [no test files]
ok github.com/facebook/openbmc/tools/flashy/checks_and_remediations/common (cached)
ok github.com/facebook/openbmc/tools/flashy/checks_and_remediations/galaxy100 (cached)
ok github.com/facebook/openbmc/tools/flashy/checks_and_remediations/grandteton (cached)
ok github.com/facebook/openbmc/tools/flashy/checks_and_remediations/wedge100 (cached)
ok github.com/facebook/openbmc/tools/flashy/checks_and_remediations/yamp (cached)
ok github.com/facebook/openbmc/tools/flashy/install (cached)
? github.com/facebook/openbmc/tools/flashy/tests [no test files]
? github.com/facebook/openbmc/tools/flashy/utilities [no test files]
ok github.com/facebook/openbmc/tools/flashy/lib/fileutils 0.010s
ok github.com/facebook/openbmc/tools/flashy/lib/flash (cached)
ok github.com/facebook/openbmc/tools/flashy/lib/flash/flashcp (cached)
ok github.com/facebook/openbmc/tools/flashy/lib/flash/flashutils 0.006s
ok github.com/facebook/openbmc/tools/flashy/lib/flash/flashutils/devices (cached)
ok github.com/facebook/openbmc/tools/flashy/lib/step (cached)
ok github.com/facebook/openbmc/tools/flashy/lib/utils 0.441s
ok github.com/facebook/openbmc/tools/flashy/lib/validate 0.007s
ok github.com/facebook/openbmc/tools/flashy/lib/validate/image (cached)
ok github.com/facebook/openbmc/tools/flashy/lib/validate/partition 0.017s
it works
0 ~/local/openbmc/tools/flashy $
```
Reviewed By: gepoggio
Differential Revision: D59759896
fbshipit-source-id: b5c742f8370dc5f79da403d41be3c096b534ca0e
