arm64: dts: rockchip: Add VPU121 support for RK3588

arm64: dts: rockchip: Add VPU121 support for RK3588

Enable Hantro G1 video decoder in RK3588's devicetree.

Tested with FFmpeg v4l2_request code taken from [1]
with MPEG2, H.264 and VP8 samples.

[1] https://github.com/LibreELEC/LibreELEC.tv/blob/master/packages/multimedia/ffmpeg/patches/v4l2-request/ffmpeg-001-v4l2-request.patch

Signed-off-by: Jianfeng Liu <liujianfeng1994@gmail.com>
Tested-by: Hugh Cole-Baker <sigmaris@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20240827181206.147617-3-sebastian.reichel@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>