Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/net/wireless/ath/carl9170/usb.c b/drivers/net/wireless/ath/carl9170/usb.c
index f82c400..2fb53d0 100644
--- a/drivers/net/wireless/ath/carl9170/usb.c
+++ b/drivers/net/wireless/ath/carl9170/usb.c
@@ -430,7 +430,7 @@
 			 * The system is too slow to cope with
 			 * the enormous workload. We have simply
 			 * run out of active rx urbs and this
-			 * unfortunatly leads to an unpredictable
+			 * unfortunately leads to an unpredictable
 			 * device.
 			 */