RT1015's output widget name is "SPO" instead of "Speaker".  Fixes it to
use the correct names.
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20201019044724.1601476-1-tzungbi@google.comSigned-off-by: Mark Brown <broonie@kernel.org>