net: Tidy up the comments to parse_args()

This function is a bit vague as to what it does. Expand the comment a
little, to specify which args are provided and which variables are
updated.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
1 file changed