The .round_waveform_tohw() is supposed to return 1 if the requestedTested-by: Trevor Gamblin <tgamblin@xxxxxxxxxxxx>
waveform cannot be implemented by rounding down all parameters. Also
adapt the corresponding comment to better describe why the implemented
procedure is right.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxx>