ASoC: dt-bindings: fsl,sai: Add compatible string for i.MX93 platform

Add compatible string "fsl,imx93-sai" for i.MX93 platform

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20221027060311.2549711-2-chancel.liu@nxp.com


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