dt-bindings: irq: sun7i-nmi: Add binding for the H616 NMI controller

Add binding for the H616 NMI controller.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240418181615.1370179-2-macroalpha82@gmail.com


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