dt-bindings: interrupt-controller: arm,versatile-fpga-irq: mark oxnas compatible...

dt-bindings: interrupt-controller: arm,versatile-fpga-irq: mark oxnas compatible as deprecated

Due to lack of maintenance and stall of development for a few years now,
and since no new features will ever be added upstream, mark the
OX810 and OX820 IRQ compatible as deprecated.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230814-topic-oxnas-upstream-remove-v3-2-e2ba579a49d3@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>