arm64: dts: rockchip: Add rk3588 GPU node

arm64: dts: rockchip: Add rk3588 GPU node

Add Mali GPU Node to the RK3588 SoC DT including GPU clock
operating points

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20240326165232.73585-3-sebastian.reichel@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: 6fca4edb93d335f29f81e484936f38a5eed6a9b1 ]

(cherry picked from commit 3cd15354ea0c8668812bc0b3a4136606c10803e9)
Signed-off-by: Jianfeng Liu <liujianfeng1994@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>