[hermon] Map all event types to our event queue

[hermon] Map all event types to our event queue

Only port state change events are currently mapped to our event queue,
since those are the only events we are prepared to handle.  This
ignores a potentially useful source of diagnostic information in the
case of unexpected failures.

Fix by mapping all events to the event queue; a build with debugging
enabled will therefore at least dump the raw content of the unexpected
events.

Signed-off-by: Michael Brown <mcb30@ipxe.org>