net/mlx4: Move MAC_MASK to a common place

Define this macro is one common place instead of duplicating it over the code

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
index 5f1298b..8dc485f 100644
--- a/include/linux/mlx4/driver.h
+++ b/include/linux/mlx4/driver.h
@@ -37,6 +37,8 @@
 
 struct mlx4_dev;
 
+#define MLX4_MAC_MASK	   0xffffffffffffULL
+
 enum mlx4_dev_event {
 	MLX4_DEV_EVENT_CATASTROPHIC_ERROR,
 	MLX4_DEV_EVENT_PORT_UP,