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/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 6c51c0a..ee20353 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2086,7 +2086,7 @@
 };
 
 /*
- * SNS command structures -- for 2200 compatability.
+ * SNS command structures -- for 2200 compatibility.
  */
 #define	RFT_ID_SNS_SCMD_LEN	22
 #define	RFT_ID_SNS_CMD_SIZE	60