ASoC: dt-bindings: use spi-peripheral-props.yaml

Instead of listing directly properties typical for SPI peripherals,
reference the spi-peripheral-props.yaml schema.  This allows using all
properties typical for SPI-connected devices, even these which device
bindings author did not tried yet.

Remove the spi-* properties which now come via spi-peripheral-props.yaml
schema, except for the cases when device schema adds some constraints
like maximum frequency.

While changing additionalProperties->unevaluatedProperties, put it in
typical place, just before example DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220727164050.385241-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/adi,adau1977.yaml

@@ -32,8 +32,6 @@ properties:
   reset-gpios:
     maxItems: 1
 
-  spi-max-frequency: true
-
   AVDD-supply:
     description: Analog power support for the device.
 
@@ -52,7 +50,10 @@ required:
   - compatible
   - AVDD-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/sound/wlf,wm8731.yaml

@@ -52,10 +52,6 @@ properties:
   DCVDD-supply:
     description: Digital core supply regulator for the DCVDD pin.
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - reg
   - compatible
@@ -64,6 +60,11 @@ required:
   - DBVDD-supply
   - DCVDD-supply
 
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
 examples:
   - |
     spi {