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/aic7xxx/aic7xxx.h b/drivers/scsi/aic7xxx/aic7xxx.h
index 17444bc..f695774 100644
--- a/drivers/scsi/aic7xxx/aic7xxx.h
+++ b/drivers/scsi/aic7xxx/aic7xxx.h
@@ -440,7 +440,7 @@
  *	o A residual has occurred if SG_FULL_RESID is set in sgptr,
  *	  or residual_sgptr does not have SG_LIST_NULL set.
  *
- *	o We are transfering the last segment if residual_datacnt has
+ *	o We are transferring the last segment if residual_datacnt has
  *	  the SG_LAST_SEG flag set.
  *
  * Host:
@@ -494,7 +494,7 @@
  */
 
 /*
- * Definition of a scatter/gather element as transfered to the controller.
+ * Definition of a scatter/gather element as transferred to the controller.
  * The aic7xxx chips only support a 24bit length.  We use the top byte of
  * the length to store additional address bits and a flag to indicate
  * that a given segment terminates the transfer.  This gives us an