tcm_qla2xxx: print port name via %*phC

Instead of pushing each byte via stack let's use custom specifier which allows
to print small buffers as a hex string.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/scsi/qla2xxx/tcm_qla2xxx.c

@@ -1570,9 +1570,7 @@ static int tcm_qla2xxx_check_initiator_node_acl(
 	 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
 	 */
 	memset(&port_name, 0, 36);
-	snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
-		fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
-		fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
+	snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
 	/*
 	 * Locate our struct se_node_acl either from an explict NodeACL created
 	 * via ConfigFS, or via running in TPG demo mode.