Rename ME event MessageIds to ensure consistency

In review https://gerrit.openbmc-project.xyz/c/openbmc/bmcweb/+/31981
it was found that naming convention of MessageId doesn't comply with
previously defined messages.
This change aligns the implementation with updated MessageRegistry
contents.

Signed-off-by: Agnieszka Szlendak <Agnieszka.Szlendak@intel.com>
Change-Id: I9302b0f456a6793b65d39305b173b7d27aacd9c6
1 file changed