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When an EC panic is reported, attempt an orderly shutdown. Force a shutdown after a brief timeout if the orderly shutdown fails for any reason. Using the common hw_protection_shutdown utility function since an EC panic has the potential to cause hw damage. This is all best effort. EC should also force a hard reset after a short timeout. Signed-off-by: Rob Barnes <robbarnes@google.com> Reviewed-by: Prashant Malani <pmalani@chromium.org> Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20230104011524.369764-3-robbarnes@google.com