ASoC: dt-bindings: cirrus,cs42l43: Fix 'gpio-ranges' schema

'gpio-ranges' is a phandle-array which is really a matrix. The schema in
cirrus,cs42l43 is incomplete as it doesn't define there's only a single
entry. Add the outer array constraints that there is a single entry.
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://msgid.link/r/20240311222554.1940567-1-robh@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml

@@ -185,6 +185,7 @@ properties:
 
       gpio-ranges:
         items:
+          - items:
               - description: A phandle to the CODEC pinctrl node
                 minimum: 0
               - const: 0