ASoC: dt-bindings: mt8192-mt6359: Set maxItems, not type, for sound-dai

ASoC: dt-bindings: mt8192-mt6359: Set maxItems, not type, for sound-dai

sound-dai is a standard property whose type is already set to
phandle-array by sound-dai.yaml, so there's no need to set it (and
wrongly so for headset-codec) in this binding. What should be set
however is the maximum number of items, which for headset-codec should
be 1.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221024230658.1772907-1-nfraprado@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>