scsi: qla2xxx: target: Improve cmd logging

scsi: qla2xxx: target: Improve cmd logging

 - Add the command tag to various messages so that different messages
   about the same command can be correlated.

 - For CTIO errors (i.e. when the HW reports an error about a cmd),
   print the cmd tag, opcode, state, initiator WWPN, and LUN.  This info
   helps an administrator determine what is going wrong.

 - When a command experiences a transport error, log a message when it
   is freed.  This makes debugging exceptions easier.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Link: https://patch.msgid.link/c579987d-5658-41ae-9653-f0e58c9d1880@cybernetics.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>