dt-bindings: usb: ti,tps6598x: Disallow undefined properties

Device specific bindings should not allow undefined properties. This is
accomplished in json-schema with 'additionalProperties: false'. With this,
the 'connector' child node needs to be defined to prevent warnings.

Acked-by: Greg Kroah-Hartman <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring <[e-mail]>

Documentation/devicetree/bindings/usb/ti,tps6598x.yaml

···
     items:
       - const: irq
 
+  connector:
+    $ref: /schemas/connector/usb-connector.yaml#
+
 required:
   - compatible
   - reg
 
-additionalProperties: true
+additionalProperties: false
 
 examples:
   - |