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/irlap_frame.c b/net/irda/irlap_frame.c
index 688222c..8c00416 100644
--- a/net/irda/irlap_frame.c
+++ b/net/irda/irlap_frame.c
@@ -848,7 +848,7 @@
 	 * though IrLAP is currently sending the *last* frame of the
 	 * tx-window, the driver most likely has only just started
 	 * sending the *first* frame of the same tx-window.
-	 * I.e. we are always at the very begining of or Tx window.
+	 * I.e. we are always at the very beginning of or Tx window.
 	 * Now, we are supposed to set the final timer from the end
 	 * of our tx-window to let the other peer reply. So, we need
 	 * to add extra time to compensate for the fact that we