9p: remove Ron Minnich from MAINTAINERS

Ron Minnich has left Sandia in 2011, and has not been involved in any 9p
commit in recent years.  Also add a CREDITS entry to record his
contributions.

Link: http://lkml.kernel.org/r/1534486244-1055-1-git-send-email-asmadeus@codewreck.org
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Ronald G. Minnich <rminnich@gmail.com>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

CREDITS

@@ -2571,6 +2571,11 @@ S: Helstorfer Str. 7
 S: D-30625 Hannover
 S: Germany
 
+N: Ron Minnich
+E: rminnich@sandia.gov
+E: rminnich@gmail.com
+D: 9p filesystem development
+
 N: Corey Minyard
 E: minyard@wf-rch.cirr.com
 E: minyard@mvista.com

MAINTAINERS

@@ -199,7 +199,6 @@ F:	drivers/net/ethernet/8390/
 
 9P FILE SYSTEM
 M:	Eric Van Hensbergen <ericvh@gmail.com>
-M:	Ron Minnich <rminnich@sandia.gov>
 M:	Latchesar Ionkov <lucho@ionkov.net>
 L:	v9fs-developer@lists.sourceforge.net
 W:	http://swik.net/v9fs