dt-bindings: interrupt-controller: mediatek,cirq: Document MT8192

Add compatible to support the SYS_CIRQ controller found on MT8192.

Signed-off-by: AngeloGioacchino Del Regno <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Marc Zyngier <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/interrupt-controller/mediatek,mtk-cirq.yaml

···
           - mediatek,mt2701-cirq
           - mediatek,mt8135-cirq
           - mediatek,mt8173-cirq
+          - mediatek,mt8192-cirq
       - const: mediatek,mtk-cirq
 
   reg: