ASoC: dt-bindings: fsl_easrc: Add support for imx8mp-easrc

The i.MX8MP appears to have the same easrc support as the Nano, so
add imx8mp as an option with a fallback to imx8mn.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230827023155.467807-1-aford173@gmail.com


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