Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index 46cc382..835d8d6 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -2679,7 +2679,7 @@
 }/*-------------------------< RESEL_TAG >-------------------*/,{
 	/*
 	**	Read IDENTIFY + SIMPLE + TAG using a single MOVE.
-	**	Agressive optimization, is'nt it?
+	**	Aggressive optimization, is'nt it?
 	**	No need to test the SIMPLE TAG message, since the 
 	**	driver only supports conformant devices for tags. ;-)
 	*/