ASoC: samsung: tm2_wm5110: parse audio-routing

Parse generic sound card "audio-routing" property and fallback to
"samsung,audio-routing" if it is missing.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230810063300.20151-11-krzysztof.kozlowski@linaro.org


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