ASoC: dt-bindings: fsl-sai: Sort main section properties

Sort main section properties, no functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221104160315.213836-3-marex@denx.de


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