MAINTAINERS: mention lockd and sunrpc in nfs entries

The actual division of labor is a little vague in some of the common
code, but if the patches get to one of us then we can sort it out.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/MAINTAINERS b/MAINTAINERS
index 0652ab3..c382ad3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2418,7 +2418,7 @@
 W:	http://www.kerneljanitors.org/
 S:	Maintained
 
-KERNEL NFSD
+KERNEL NFSD, SUNRPC, AND LOCKD SERVERS
 P:	J. Bruce Fields
 M:	bfields@fieldses.org
 P:	Neil Brown
@@ -3036,7 +3036,7 @@
 L:	netdev@vger.kernel.org
 S:	Maintained
 
-NFS CLIENT
+NFS, SUNRPC, AND LOCKD CLIENTS
 P:	Trond Myklebust
 M:	Trond.Myklebust@netapp.com
 L:	linux-nfs@vger.kernel.org