fix(tree): correct some typos

found using codespell (https://github.com/codespell-project/codespell).

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: I1bfa797e3460adddeefa916bb68e22beddaf6373
diff --git a/drivers/scmi-msg/clock.c b/drivers/scmi-msg/clock.c
index 85bf7d2..98fdc6a 100644
--- a/drivers/scmi-msg/clock.c
+++ b/drivers/scmi-msg/clock.c
@@ -344,7 +344,7 @@
 		scmi_status_response(msg, status);
 	} else {
 		/*
-		 * Message payload is already writen to msg->out, and
+		 * Message payload is already written to msg->out, and
 		 * msg->out_size_out updated.
 		 */
 	}