MAINTAINERS: Add Mellanox ethernet driver - mlx4_en

Set mlx4_en maintainer to Amir Vadai instead of Yevgeny Petrilin.
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Cc: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -4822,6 +4822,14 @@ F:	Documentation/scsi/megaraid.txt
 F:	drivers/scsi/megaraid.*
 F:	drivers/scsi/megaraid/
 
+MELLANOX ETHERNET DRIVER (mlx4_en)
+M:	Amir Vadai <amirv@mellanox.com>
+L: 	netdev@vger.kernel.org
+S:	Supported
+W:	http://www.mellanox.com
+Q:	http://patchwork.ozlabs.org/project/netdev/list/
+F:	drivers/net/ethernet/mellanox/mlx4/en_*
+
 MEMORY MANAGEMENT
 L:	linux-mm@kvack.org
 W:	http://www.linux-mm.org