[SCSI] qla4xxx: export iface name

Export the name of iface session is attached to. This is needed
so tools like iscsiadm/iscsistart can match the sessions to
userspace ifaces when rebuilding iscsid's state during boot.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/qla4xxx/ql4_os.c

@@ -213,6 +213,7 @@ static mode_t ql4_attr_is_visible(int param_type, int param)
 		case ISCSI_PARAM_FIRST_BURST:
 		case ISCSI_PARAM_MAX_RECV_DLENGTH:
 		case ISCSI_PARAM_MAX_XMIT_DLENGTH:
+		case ISCSI_PARAM_IFACE_NAME:
 			return S_IRUGO;
 		default:
 			return 0;