move internal-only parts of ncpfs headers to fs/ncpfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c
index 668bd26..3a15872 100644
--- a/fs/ncpfs/sock.c
+++ b/fs/ncpfs/sock.c
@@ -28,7 +28,7 @@
 #include <linux/poll.h>
 #include <linux/file.h>
 
-#include <linux/ncp_fs.h>
+#include "ncp_fs.h"
 
 #include "ncpsign_kernel.h"