[PATCH] nvme-tcp: add additional info for nvme_tcp_timeout log

[Sagi Grimberg]

> From: Amit Engel <Amit.Engel at dell.com>
> 
> This provides additional details about the rq/cmd that is timed out

I think that you should separate the patches to add the fabrics opcode
string and then another patch to have nvme-tcp call it.

Also, please make sure that this is fine with/without
CONFIG_NVME_VERBOSE_ERRORS and provide example log message for
each variant in the commit-msg.