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/pmcraid.h b/drivers/scsi/pmcraid.h
index 4db210d..34e4c91 100644
--- a/drivers/scsi/pmcraid.h
+++ b/drivers/scsi/pmcraid.h
@@ -1024,7 +1024,7 @@
 
 
 /*
- * pmcraid_ioctl_header - definition of header structure that preceeds all the
+ * pmcraid_ioctl_header - definition of header structure that precedes all the
  * buffers given as ioctl arguments.
  *
  * .signature           : always ASCII string, "PMCRAID"