net: defxx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles

dev_consume_skb_irq() should be called in dfx_xmt_done() when skb
xmit done. It makes drop profiles(dropwatch, perf) more friendly.

Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/fddi/defxx.c

@@ -3512,7 +3512,7 @@ static int dfx_xmt_done(DFX_board_t *bp)
 				 bp->descr_block_virt->xmt_data[comp].long_1,
 				 p_xmt_drv_descr->p_skb->len,
 				 DMA_TO_DEVICE);
-		dev_kfree_skb_irq(p_xmt_drv_descr->p_skb);
+		dev_consume_skb_irq(p_xmt_drv_descr->p_skb);
 
 		/*
 		 * Move to start of next packet by updating completion index