dt-bindings: irq: sun7i-nmi: Add binding for A100's NMI controller

Add a binding for A100's nmi controller.

Signed-off-by: Yangtao Li <frank@allwinnertech.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/953b76413563551b82dd11cadbc99c695f74f721.1595572867.git.frank@allwinnertech.com

Documentation/devicetree/bindings/interrupt-controller/allwinner,sun7i-a20-sc-nmi.yaml

@@ -33,6 +33,9 @@ properties:
       - items:
           - const: allwinner,sun50i-a64-r-intc
           - const: allwinner,sun6i-a31-r-intc
+      - items:
+          - const: allwinner,sun50i-a100-nmi
+          - const: allwinner,sun9i-a80-nmi
       - items:
           - const: allwinner,sun50i-h6-r-intc
           - const: allwinner,sun6i-a31-r-intc