Add a comment to the input struct

Detail the members.  Some less obvious members will be added, this
provides a place to give a quick description of what each member does.

BUG=none
TEST=It's just a comment.

Change-Id: I915f7bbf154d0f3fe5661e69e8083bd4c36ce880
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/280538
Reviewed-by: Olof Johansson <olofj@chromium.org>
1 file changed