net: stmmac: adding multiple napi mechanism

This patch adds the napi variable to the stmmac_rx_queue
structure and forces that operations like netif_queue_stopped,
netif_wake_queue, netif_stop_queue, netdev_reset_queue and
netdev_sent_queue be made by queue.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -72,6 +72,7 @@ struct stmmac_rx_queue {
 	u32 rx_zeroc_thresh;
 	dma_addr_t dma_rx_phy;
 	u32 rx_tail_addr;
+	struct napi_struct napi ____cacheline_aligned_in_smp;
 };
 
 struct stmmac_priv {
@@ -91,8 +92,6 @@ struct stmmac_priv {
 	u32 rx_riwt;
 	int hwts_rx_en;
 
-	struct napi_struct napi ____cacheline_aligned_in_smp;
-
 	void __iomem *ioaddr;
 	struct net_device *dev;
 	struct device *device;