pcnet32: Call dev_kfree_skb_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in pcnet32_start_xmit
that can be called in hard irq and other contexts.

dev_kfree_skb_any is used as pcnet32_start_xmit only frees an
skb when it drops a packet during transmit.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

drivers/net/ethernet/amd/pcnet32.c

@@ -2448,7 +2448,7 @@ static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
 	lp->tx_dma_addr[entry] =
 	    pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
 	if (pci_dma_mapping_error(lp->pci_dev, lp->tx_dma_addr[entry])) {
-		dev_kfree_skb(skb);
+		dev_kfree_skb_any(skb);
 		dev->stats.tx_dropped++;
 		goto drop_packet;
 	}