Add hooks to route BIOS events to Redfish

This adds a hook to check the content of an IPMI SEL record
before it is added to the SEL.  If it comes from the BIOS,
the message will be logged as a Redfish event instead of
an IPMI SEL.

Change-Id: Ib6e6acfefc9f0a26e0e70f0712e1a5eb804edba4
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
5 files changed