ASoC: meson: tdmout: add sm1 support

On the sm1, the TDMOUT number of input is extended and the
the gain enable bit moved to accommodate this extension

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20190905120120.31752-9-jbrunet@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>