net/sock.h: make some fields private to fix kernel-doc warning(s)

Fix new kernel-doc notation warning in sock.h by annotating skc_dontcopy_*
as private fields.

Warning(include/net/sock.h:163): No description found for parameter 'skc_dontcopy_end[0]'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sock.h b/include/net/sock.h
index 21a02f7..d884d26 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -152,14 +152,18 @@
 	 * fields between dontcopy_begin/dontcopy_end
 	 * are not copied in sock_copy()
 	 */
+	/* private: */
 	int			skc_dontcopy_begin[0];
+	/* public: */
 	union {
 		struct hlist_node	skc_node;
 		struct hlist_nulls_node skc_nulls_node;
 	};
 	int			skc_tx_queue_mapping;
 	atomic_t		skc_refcnt;
+	/* private: */
 	int                     skc_dontcopy_end[0];
+	/* public: */
 };
 
 /**