ASoC: sun4i-i2s: Fix the LRCK period on A83t

Unlike the previous SoCs, the A83t, like the newer ones, need the LRCK
bitfield to be set. Let's add it.

Fixes: 21faaea1 ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/6a0ee0bc1375bcb53840d3fb2d2f3d9732b8e57e.1566242458.git-series.maxime.ripard@bootlin.com


Signed-off-by: Mark Brown <broonie@kernel.org>