usb/kaweth: print MAC via printk format specifier

Print MAC/dev_addr via printk extended format specifier %pM
instead of custom code.

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Acked-by: Oliver Neukum <oliver@neukum.name>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/kaweth.c

@@ -1098,13 +1098,7 @@ err_fw:
 	dev_info(&intf->dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
 	dev_info(&intf->dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
 	dev_info(&intf->dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
-	dev_info(&intf->dev, "Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
-		 (int)kaweth->configuration.hw_addr[0],
-		 (int)kaweth->configuration.hw_addr[1],
-		 (int)kaweth->configuration.hw_addr[2],
-		 (int)kaweth->configuration.hw_addr[3],
-		 (int)kaweth->configuration.hw_addr[4],
-		 (int)kaweth->configuration.hw_addr[5]);
+	dev_info(&intf->dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr);
 
 	if(!memcmp(&kaweth->configuration.hw_addr,
                    &bcast_addr,