[PATCH v2 rfc 1/3] nvme: split nvme_remove_namespaces

[Sagi Grimberg]

> I find the split rather confusing.  So I looked into alternatives
> and found that the state change should just be a no-op for the PCIe
> reset case.

Looks like the original version, but the only thing that bothers me
is that in the reset handler, if we failed to setup any I/O queues,
we'll put the state in DELETING_NOIO while it's not deleting, I think
that the point of allowing this is to have the device still up for the
user to analyze and debug it.