ASoC: codecs: wcd93xx-sdw: fix of_property_read_bool() warnings

Using of_property_read_bool() for non-boolean properties has been
deprecated in favour of of_property_present() and since commit
c141ecc3 ("of: Warn when of_property_read_bool() is used on
non-boolean properties") this also generates a warning:

	OF: /soc@0/soundwire@3330000/wcd9380-tx@0,3: Read of boolean property 'qcom,tx-port-mapping' with a value.

Switch to using of_property_present() to look for "qcom,tx-port-mapping"
properties.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://patch.msgid.link/20250210132128.7734-1-johan+linaro@kernel.org


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