Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

drivers/atm/ambassador.c

diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
index 9f47e86..a5fcb1e 100644
--- a/drivers/atm/ambassador.c
+++ b/drivers/atm/ambassador.c
@@ -497,7 +497,7 @@
 	  // VC layer stats
 	  atomic_inc(&atm_vcc->stats->rx);
 	  __net_timestamp(skb);
-	  // end of our responsability
+	  // end of our responsibility
 	  atm_vcc->push (atm_vcc, skb);
 	  return;