MAINTAINERS: add Yanjun to FORCEDETH maintainers list

Yanjun has been spending quite a lot of time fixing bugs
in FORCEDETH source code. I'd like to add Yanjun to maintainers
list.
Signed-off-by: Rain River <rain.1986.08.12@gmail.com>
Acked-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -643,6 +643,7 @@ F:	drivers/net/ethernet/alacritech/*
 
 FORCEDETH GIGABIT ETHERNET DRIVER
 M:	Rain River <rain.1986.08.12@gmail.com>
+M:	Zhu Yanjun <yanjun.zhu@oracle.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/ethernet/nvidia/*