greybus: operation: fix typo in comment

Fix typo in comment.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
diff --git a/drivers/staging/greybus/operation.c b/drivers/staging/greybus/operation.c
index 5447351..41a3deb 100644
--- a/drivers/staging/greybus/operation.c
+++ b/drivers/staging/greybus/operation.c
@@ -75,7 +75,7 @@
  * valid value operation->errno can be set to is -EINPROGRESS,
  * indicating the request has been (or rather is about to be) sent.
  * At that point nobody should be looking at the result until the
- * reponse arrives.
+ * response arrives.
  *
  * The first time the result gets set after the request has been
  * sent, that result "sticks."  That is, if two concurrent threads