Fix vPort management: FC vHBA creation

When creating a virtual FC HBA with virsh/libvirt API, an error message
will be returned: "error: Node device not found",
also the 'nodedev-dumpxml' shows wrong information of wwpn & wwnn
for the new created device.

Signed-off-by: xschen@tnsoft.com.cn

This reverts f90af691 which switched wwpn & wwwn in the wrong place.

https://www.kernel.org/doc/Documentation/scsi/scsi_fc_transport.txt
(cherry picked from commit 3c0d5e22)

Conflicts:
	src/storage/storage_backend_scsi.c

src/util/virutil.c

@@ -3551,8 +3551,8 @@ virManageVport(const int parent_host,
 
     if (virAsprintf(&vport_name,
                     "%s:%s",
-                    wwnn,
-                    wwpn) < 0) {
+                    wwpn,
+                    wwnn) < 0) {
         virReportOOMError();
         goto cleanup;
     }