After a failed hard reset, we keep trying to negotiate power.  Before,
the LED was on steady indicating negotiation failure during these
continued negotiations.  Now it keeps blinking, indicating what's
actually going on.

There are still a few things that the standard says we Shall do and we
don't, but it Works For Me™.  I haven't implemented anything with
regards to GiveBack support, but that doesn't matter just yet.  Our
handling of VDMs isn't quite right either.  Anyway, it successfully
negotiates with so-called Split PDO power supplies, which is more than I
can say about some commercial products.