ASoC: dt-bindings: qcom,lpass-tx-macro: Add SM6115

SM6115 has a TX Macro, requiring an NPL clock, but not DCODEC.
Document it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230825-topic-6115tx-v1-1-ebed201ad54b@linaro.org


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