dt-bindings: irqchip: ti,sci-inta: Add optional power-domains property

On certain SoCs, Interrupt Aggregator may have a power-domain dependency
to be on before accessing. Add DT binding for the same

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230407045111.531107-1-vigneshr@ti.com


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