[SCSI] Print failed commands

When a command fails we print the sense data but not the actual command
that failed.  Add a printout of the operation + CDB for failed commands.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

---

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 30f3275..79ea5be 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -896,6 +896,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
 			scsi_print_result(cmd);
 			if (driver_byte(result) & DRIVER_SENSE)
 				scsi_print_sense("", cmd);
+			scsi_print_command(cmd);
 		}
 		blk_end_request_all(req, -EIO);
 		scsi_next_command(cmd);