dt-bindings: ieee802154: Convert at86rf230.txt yaml format

Convert at86rf230.txt yaml format.

Additional changes:
- Add ref to spi-peripheral-props.yaml.
- Add parent spi node in examples.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20250724230129.1480174-1-Frank.Li@nxp.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>