ASoC: odroid: Use unevaluatedProperties

ASoC: odroid: Use unevaluatedProperties

Additional properties or nodes actually might appear (e.g.
assigned-clocks) so use unevaluatedProperties to fix dtbs_check warnings
like:

  arch/arm/boot/dts/exynos5422-odroidxu3.dt.yaml: sound:
    'assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Link: https://lore.kernel.org/r/20200830112633.6732-2-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>