nfsd: move most of nfsfh.h to fs/nfsd

Most of this can be trivially moved to a private header as well.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

fs/nfsd/state.h

@@ -38,6 +38,7 @@
 #define _NFSD4_STATE_H
 
 #include <linux/nfsd/nfsfh.h>
+#include "nfsfh.h"
 
 typedef struct {
 	u32             cl_boot;