dt-bindings: iommu: rockchip: Add Rockchip RK3588

Add a Rockchip RK3588 compatible

I split it from the vop2 patch series as suggested by Heiko[0]

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[0]https://patchwork.kernel.org/project/dri-devel/patch/20231207080235.652719-1-andyshrk@163.com/

Link: https://lore.kernel.org/r/20231212005710.1837066-1-andyshrk@163.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>