[PATCH] nvme-fabrics: clarify AUTHREQ result handling

[Sagi Grimberg]

> The NVMe 2.0 spec defines the ATR and ASCR bits in the AUTHREQ
> connect response field to be mutually exclusive. So to clarify the
> handling here switch the AUTHREQ handling to use the bit definitions
> and check for both bits.
> And while we're at it, add a message to the user that secure
> concatenation is not supported (yet).
> 
> Suggested-by: Mark Lehrer <mark.lehrer at wdc.com>
> Signed-off-by: Hannes Reinecke <hare at suse.de>

Reviewed-by: Sagi Grimberg <sagi at grimberg.me>