dt-bindings: w1: Convert HDQ One Wire to DT schema

Convert the Texas Instruments OMAP HDQ One Wire bindings to DT schema.

During the conversion, several updates were made to reflect actual hardware
usage and resolve dtbs_check warnings:
- 'ti,hwmods' has been made optional.
- Added 'clocks' and 'clock-names' properties as they are used in actual
  device trees (e.g., am437x-l4.dtsi).
- Added a second example for the AM4372 HDQ controller to demonstrate
  the clock and interrupt configuration.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260630124826.2992529-1-egbostina@gmail.com
[krzk: Rename node names to onewire to match convention, fix path in omap-hdq.rst]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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