Describe optional properties for clocks and ports that were missing in
the original txt binding, to fix warnings like:

aic33@18: 'assigned-clock-parents', 'assigned-clock-rates',
	'assigned-clocks' do not match any of the regexes:
	'pinctrl-[0-9]+'
	arch/arm/boot/dts/omap2420-n810.dtb

tlv320aic3106@1b: 'port' does not match any of the regexes:
	'pinctrl-[0-9]+'
	arch/arm/boot/dts/am335x-sl50.dtb

codec@18: 'clocks' does not match any of the regexes: 'pinctrl-[0-9]+'
	arch/arm/boot/dts/imx6dl-gw5903.dtb
	arch/arm/boot/dts/imx6q-gw5903.dtb

Some uses of "port" still lead to warnings because they pass clocks in
the endpoint, but that is discouraged:
https://lore.kernel.org/all/20210205152644.GA3083322@robh.at.kernel.org/Signed-off-by: Jai Luthra <j-luthra@ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221230132644.6398-1-j-luthra@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>