sunrpc: move address copy/cmp/convert routines and prototypes from clnt.h to addr.h

These routines are used by server and client code, so having them in a
separate header would be best.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index d16a5d6..f754469 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -9,7 +9,7 @@
  */
 
 #include <linux/slab.h>
-#include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/addr.h>
 #include <linux/highmem.h>
 
 #include "nfsd.h"