bnx2x: Fixing the doorbell size

The size of the doorbell is 4KB, this bug become visible when using
more than 8 queues
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2x.h

@@ -739,7 +739,7 @@ struct bnx2x {
 	struct bnx2x_fastpath	fp[MAX_CONTEXT];
 	void __iomem		*regview;
 	void __iomem		*doorbells;
-#define BNX2X_DB_SIZE		(16*2048)
+#define BNX2X_DB_SIZE		(16*BCM_PAGE_SIZE)
 
 	struct net_device	*dev;
 	struct pci_dev		*pdev;