drivers/net/ethernet/tile: fix netdev_alloc_skb() bombing

Commit dae2e9f4 changed dev_alloc_skb()
to netdev_alloc_skb(), adding a dev pointer, but erroneously used "->"
instead of "." for a struct member when accessing the dev pointer.
This change fixes the build breakage.
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>

drivers/net/ethernet/tile/tilepro.c

@@ -448,7 +448,7 @@ static bool tile_net_provide_needed_buffer(struct tile_net_cpu *info,
 	struct sk_buff **skb_ptr;
 
 	/* Request 96 extra bytes for alignment purposes. */
-	skb = netdev_alloc_skb(info->napi->dev, len + padding);
+	skb = netdev_alloc_skb(info->napi.dev, len + padding);
 	if (skb == NULL)
 		return false;