5042 stop using deprecated atomic functions

@@ -1081,11 +1081,12 @@
                 }
 
                 status = (nmblks <= ((int)tx_ring_p->tx_ring_size -
                     (int)tx_ring_p->descs_pending - TX_FULL_MARK));
                 if (status) {
-                        (void) cas32((uint32_t *)&tx_ring_p->queueing, 1, 0);
+                        (void) atomic_cas_32((uint32_t *)&tx_ring_p->queueing,
+                            1, 0);
                 }
         } else {
                 status = (nmblks <= ((int)tx_ring_p->tx_ring_size -
                     (int)tx_ring_p->descs_pending - TX_FULL_MARK));
         }