Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/net/irda/irttp.c b/net/irda/irttp.c
index f6054f9..9d9af46 100644
--- a/net/irda/irttp.c
+++ b/net/irda/irttp.c
@@ -1193,7 +1193,7 @@
 /*
  * Function irttp_connect_confirm (handle, qos, skb)
  *
- *    Sevice user confirms TSAP connection with peer.
+ *    Service user confirms TSAP connection with peer.
  *
  */
 static void irttp_connect_confirm(void *instance, void *sap,