ASoC: dt-bindings: rt5682s: correct several errors

Correct several errors in rt5682s dtschema:
1. The examples should be under "examples":
    'example' is not one of ['$id', '$schema', 'title', 'description', 'examples', ...

2. Missing type for vendor properties

3. clock-names should be an array:
    properties:clock-names:items: {'const': 'mclk'} is not of type 'array'

4. Example DTS should include headers:
    [scripts/Makefile.lib:386: Documentation/devicetree/bindings/sound/realtek,rt5682s.example.dt.yaml] Error 1

5. Node name in example DTS misses unit address and does not match DT
   convention (generic name):
    Warning (reg_format): /example-0/rt5682s:reg: property has invalid length (4 bytes) (#address-cells == 1, #size-cells == 1)

6. Node address should be in size-cells:0 block in example DTS:
    Warning (reg_format): /example-0/codec@1a:reg: property has invalid length (4 bytes) (#address-cells == 1, #size-cells == 1)

Fixes: 50159fdb

 ("ASoC: dt-bindings: rt5682s: add bindings for rt5682s")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210920112106.140918-1-krzysztof.kozlowski@canonical.com


Signed-off-by: Mark Brown <broonie@kernel.org>