dt-bindings: incomplete-devices: And another batch of compatibles

Another batch of compatibles unlikely to ever be documented. It's
mostly old PowerMAC and PPC stuff found in DT compatible API calls.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240904200253.3112699-1-robh@kernel.org


Signed-off-by: Rob Herring (Arm) <robh@kernel.org>