SMC: add events for Satellite Management Controllers

Add events to report issues with attached SMCs, such as
heartbeat failures or inability to communicate. This is
reported as a generic event (SMC

SMC: add events for Satellite Management Controllers

Add events to report issues with attached SMCs, such as
heartbeat failures or inability to communicate. This is
reported as a generic event (SMCFailed), which is most
likely useful enough for external reporting and fault isolation,
but includes a field for additional debug data of the failure
type.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic0cc09135d1b8301f98e1df5b6b6e9180929c811

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