eth: octeon: fix build after netif_napi_add() changes

Guenter reports I missed a netif_napi_add() call
in one of the platform-specific drivers:

drivers/net/ethernet/cavium/octeon/octeon_mgmt.c: In function 'octeon_mgmt_probe':
drivers/net/ethernet/cavium/octeon/octeon_mgmt.c:1399:9: error: too many arguments to function 'netif_napi_add'
 1399 |         netif_napi_add(netdev, &p->napi, octeon_mgmt_napi_poll,
      |         ^~~~~~~~~~~~~~
Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: b48b89f9 ("net: drop the weight argument from netif_napi_add")
Link: https://lore.kernel.org/r/20221002175650.1491124-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/cavium/octeon/octeon_mgmt.c

@@ -1396,7 +1396,7 @@ static int octeon_mgmt_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, netdev);
 	p = netdev_priv(netdev);
-	netif_napi_add(netdev, &p->napi, octeon_mgmt_napi_poll,
+	netif_napi_add_weight(netdev, &p->napi, octeon_mgmt_napi_poll,
 			      OCTEON_MGMT_NAPI_WEIGHT);
 
 	p->netdev = netdev;