[SCSI] libfc: improve debug messages for ELS response handlers

Improve lport and rport debug messages to indicate whether
the response is LS_ACC, LS_RJT, closed, or timeout.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>