ASoC: dt-bindings: More dropping unneeded quotes

Another batch of dropping unneeded quotes on $id and $schema which were
missed in the last round. Once all these are fixed, checking for this can
be enabled in yamllint.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230421214810.1811962-1-robh@kernel.org


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