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_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index d17ed9a..712518d 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -414,7 +414,7 @@
 				    "marked OFFLINE!\n");
 				vha->flags.online = 0;
 			} else {
-				/* Check to see if MPI timeout occured */
+				/* Check to see if MPI timeout occurred */
 				if ((mbx & MBX_3) && (ha->flags.port0))
 					set_bit(MPI_RESET_NEEDED,
 					    &vha->dpc_flags);