MAINTAINERS: Update NetEffect (iw_nes) entry

Add Chien and remove Nishi from maintainers list for NetEffect.

Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

MAINTAINERS

diff --git a/MAINTAINERS b/MAINTAINERS
index 0a6d2ca..bd3badb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2866,8 +2866,8 @@
 NETEFFECT IWARP RNIC DRIVER (IW_NES)
 P:	Faisal Latif
 M:	flatif@neteffect.com
-P:	Nishi Gupta
-M:	ngupta@neteffect.com
+P:	Chien Tung
+M:	ctung@neteffect.com
 P:	Glenn Streiff
 M:	gstreiff@neteffect.com
 L:	general@lists.openfabrics.org