Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 6d4b29c..ee79a2d 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1972,7 +1972,7 @@
 	 * 0 to 1.  So for those chips, we turn it off and then back on.
 	 * This will (very briefly) affect any other open ports, but the
 	 * duration is very short, and therefore isn't an issue.  We
-	 * explictly set the in-memory tail copy to 0 beforehand, so we
+	 * explicitly set the in-memory tail copy to 0 beforehand, so we
 	 * don't have to wait to be sure the DMA update has happened
 	 * (chip resets head/tail to 0 on transition to enable).
 	 */