net/ieee802154: Fix some typos noted when cloning to create net/bluetooth.

net/ieee802154/Kconfig

@@ -13,7 +13,7 @@ config NET_IEEE802154
 	---help---
 		Enable support for raw, IEEE 802.15.4 sockets.
 
-		Raw sockets allow receiving and transmitting IEEE 802.15.3 radio
+		Raw sockets allow receiving and transmitting IEEE 802.15.4 radio
 		frames without a layer2 protocol such as 6LoWPAN in between. Frames
 		received are copied into a IEEE 802.15.4 socket tap before they
 		enter the network. Frames written into a IEEE 802.15.4 socket will

net/ieee802154/ieee802154.h

@@ -175,7 +175,7 @@ void ieee802154_initialize(void);
  * Name: ieee802154_conn_initialize
  *
  * Description:
- *   Initialize the IEEE 802.15.5 connection structure allocator.  Called
+ *   Initialize the IEEE 802.15.4 connection structure allocator.  Called
  *   once and only from ieee802154_initialize().
  *
  * Assumptions:

net/ieee802154/ieee802154_conn.c

@@ -83,7 +83,7 @@ static dq_queue_t g_active_ieee802154_connections;
  * Name: ieee802154_conn_initialize
  *
  * Description:
- *   Initialize the IEEE 802.15.5 connection structure allocator.  Called
+ *   Initialize the IEEE 802.15.4 connection structure allocator.  Called
  *   once and only from ieee802154_initialize().
  *
  * Assumptions:

net/ieee802154/ieee802154_container.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- *  wireless/pktradio/ieee802154_container.c
+ *  net/ieee802154/ieee802154_container.c
  *
  *   Copyright (C) 2017 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>