[SCSI] zfcp: Fix cast warning

Fix leftover from last typecast patch:

drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_port_enqueue’:
drivers/s390/scsi/zfcp_aux.c:629: warning: format ‘%016llx’ expects
type ‘long long unsigned int’, but argument 3 has type ‘u64’

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 3b56220..3d4e3e3 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -610,7 +610,8 @@
 	atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status);
 	atomic_set(&port->refcount, 0);
 
-	dev_set_name(&port->sysfs_device, "0x%016llx", wwpn);
+	dev_set_name(&port->sysfs_device, "0x%016llx",
+		     (unsigned long long)wwpn);
 	port->sysfs_device.parent = &adapter->ccw_device->dev;
 
 	port->sysfs_device.release = zfcp_sysfs_port_release;