gpiolib: of: Add quirk for mt2701-cs42448 ASoC sound

These gpio names are due to old DT bindings not following the
"-gpio"/"-gpios" conventions. Handle it using a quirk so the
driver can just look up the GPIOs.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231006-descriptors-asoc-mediatek-v1-1-07fe79f337f5@linaro.org


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