dt-bindings: arm: rockchip: Add Radxa ROCK 4SE

Add devicetree binding entry for the Radxa ROCK 4SE.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Christopher Obbard <chris.obbard@collabora.com>
Link: https://lore.kernel.org/r/20230710115025.507439-3-chris.obbard@collabora.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>