ASoC: dt-bindings: simple-card: add missing #address-cells/#size-cells

In case of using MIXer with Simple Audio Card, it needs below DT.

	simple-audio-card,dai-link@1 {
		cpu@0 {
			...
		};
		cpu@1 {
			...
		};
		...
	};

This case, it requires "reg = <xxx>" which needs #address-cells/#size-cells,
but simple-audio-card.yaml is missing these. This patch adds it.

Without this patch, we will get below warning.

${LINUX}/arch/arm64/boot/dts/renesas/r8a77950-ulcb.dtb: sound: simple-audio-card,dai-link@0: '#address-cells', '#size-cells' do not match any of the regexes: '^codec(@[0-9a-f]+)?', '^cpu(@[0-9a-f]+)?', 'pinctrl-[0-9]+'
	From schema: ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.yaml

Link: https://lore.kernel.org/r/167344317928.394453.14105689826645262807.robh@kernel.orgReported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87cz757rdi.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/simple-card.yaml

@@ -217,6 +217,10 @@ patternProperties:
       reg:
         maxItems: 1
 
+      "#address-cells":
+        const: 1
+      "#size-cells":
+        const: 0
       # common properties
       frame-master:
         $ref: "#/definitions/frame-master"