doc: Change "None" return value to "N/A"

Improves documentation consistency by using "N/A" instead of "None"
when the routine does not return a value.

Change-Id: I429a159b3037742cbc431db0cb4828ab9d6d35c3
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>

include/bluetooth/conn.h

@@ -168,7 +168,7 @@ uint8_t bt_conn_enc_key_size(struct bt_conn *conn);
  *  @param auto_conn boolean value. If true, auto connect is enabled,
  *  if false, auto connect is disabled.
  *
- *  @return none
+ *  @return N/A
  */
 void bt_conn_set_auto_conn(struct bt_conn *conn, bool auto_conn);
 

include/bluetooth/uuid.h

@@ -173,7 +173,7 @@ int bt_uuid_cmp(const struct bt_uuid *u1, const struct bt_uuid *u2);
  *  @param str pointer where to put converted string
  *  @param len length of str
  *
- *  @return none
+ *  @return N/A
  */
 void bt_uuid_to_str(const struct bt_uuid *uuid, char *str, size_t len);
 

include/drivers/console/uart_console.h

@@ -42,7 +42,7 @@ struct uart_console_input {
  *  @param lines nano_fifo queue of entered lines which to be processed
  *         in the application code.
  *
- *  @return None
+ *  @return N/A
  */
 void uart_register_input(struct nano_fifo *avail, struct nano_fifo *lines);
 

include/drivers/k20_uart.h

@@ -202,7 +202,7 @@ struct uart_k20_dev_data {
  * @param clk_freq Clock frequency
  * @param baud_rate Baud rate to set
  *
- * @return None
+ * @return N/A
  */
 static ALWAYS_INLINE void _k20_uart_baud_rate_set(volatile struct K20_UART *uart_p,
 						  uint32_t clk_freq,
@@ -234,7 +234,7 @@ static ALWAYS_INLINE void _k20_uart_baud_rate_set(volatile struct K20_UART *uart
  *
  * @param uart_p UART data
  *
- * @return None
+ * @return N/A
  */
 static inline void _k20_uart_fifo_enable(volatile struct K20_UART *uart_p)
 {

include/misc/dlist.h

@@ -49,7 +49,7 @@ typedef struct _dnode sys_dnode_t;
  *
  * @param list the doubly-linked list
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_init(sys_dlist_t *list)
@@ -133,7 +133,7 @@ static inline sys_dnode_t *sys_dlist_peek_next(sys_dlist_t *list,
  * @param list the doubly-linked list to operate on
  * @param node the element to append
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_append(sys_dlist_t *list, sys_dnode_t *node)
@@ -151,7 +151,7 @@ static inline void sys_dlist_append(sys_dlist_t *list, sys_dnode_t *node)
  * @param list the doubly-linked list to operate on
  * @param node the element to append
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_prepend(sys_dlist_t *list, sys_dnode_t *node)
@@ -172,7 +172,7 @@ static inline void sys_dlist_prepend(sys_dlist_t *list, sys_dnode_t *node)
  * @param insert_point the insert point in the list: if NULL, insert at head
  * @param node the element to append
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_insert_after(sys_dlist_t *list,
@@ -197,7 +197,7 @@ static inline void sys_dlist_insert_after(sys_dlist_t *list,
  * @param insert_point the insert point in the list: if NULL, insert at tail
  * @param node the element to insert
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_insert_before(sys_dlist_t *list,
@@ -226,7 +226,7 @@ static inline void sys_dlist_insert_before(sys_dlist_t *list,
  *             insert point
  * @param data parameter to cond()
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_insert_at(sys_dlist_t *list, sys_dnode_t *node,
@@ -251,7 +251,7 @@ static inline void sys_dlist_insert_at(sys_dlist_t *list, sys_dnode_t *node,
  *
  * @param node the node to remove
  *
- * @return None
+ * @return N/A
  */
 
 static inline void sys_dlist_remove(sys_dnode_t *node)

include/nanokernel.h

@@ -227,7 +227,7 @@ extern void fiber_abort(void);
  *
  * @param timeout number of system ticks to sleep
  *
- * @return None
+ * @return N/A
  */
 extern void fiber_sleep(int32_t timeout);
 
@@ -263,7 +263,7 @@ extern void fiber_delayed_start_cancel(void *handle);
  *
  * @param handle A handle returned when asking to start the fiber
  *
- * @return None
+ * @return N/A
  */
 extern void fiber_fiber_delayed_start_cancel(void *handle);
 #endif