usb: lan78xx: remove a copy of the NAPI_POLL_WEIGHT define

Defining local versions of NAPI_POLL_WEIGHT with the same
values in the drivers just makes refactoring harder.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/lan78xx.c

@@ -92,8 +92,6 @@
 					 WAKE_MCAST | WAKE_BCAST | \
 					 WAKE_ARP | WAKE_MAGIC)
 
-#define LAN78XX_NAPI_WEIGHT		64
-
 #define TX_URB_NUM			10
 #define TX_SS_URB_NUM			TX_URB_NUM
 #define TX_HS_URB_NUM			TX_URB_NUM
@@ -4376,7 +4374,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 
 	netif_set_gso_max_size(netdev, LAN78XX_TSO_SIZE(dev));
 
-	netif_napi_add(netdev, &dev->napi, lan78xx_poll, LAN78XX_NAPI_WEIGHT);
+	netif_napi_add(netdev, &dev->napi, lan78xx_poll, NAPI_POLL_WEIGHT);
 
 	INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
 	init_usb_anchor(&dev->deferred);