Remove dangling whitespace form the end of lines

wireless/ieee802154/mac802154.c

@@ -329,7 +329,7 @@ void mac802154_create_datareq(FAR struct ieee802154_privmac_s *priv,
       memcpy(&iob->io_data[iob->io_len], &priv->addr.panid, 2);
       iob->io_len += 2;
     }
-  
+
   if (srcmode == IEEE802154_ADDRMODE_SHORT)
     {
       memcpy(&iob->io_data[iob->io_len], &priv->addr.saddr, 2);

wireless/ieee802154/mac802154_poll.c

@@ -144,7 +144,7 @@ int mac802154_req_poll(MACHANDLE mac, FAR struct ieee802154_poll_req_s *req)
       mac802154_create_datareq(priv, &req->coordaddr, IEEE802154_ADDRMODE_SHORT,
                                txdesc);
     }
-    
+
   /* Save a reference of the tx descriptor */
 
   priv->cmd_desc = txdesc;