arm64: dts: rockchip: Add ArmSom Sige7 board

arm64: dts: rockchip: Add ArmSom Sige7 board

Specification:
        Rockchip Rk3588 SoC
        4x ARM Cortex-A76, 4x ARM Cortex-A55
        8/16/32GB Memory LPDDR4/LPDDR4x
        Mali G610MP4 GPU
        2× MIPI-CSI Connector
        1× MIPI-DSI Connector
        1x M.2 Key M (PCIe 3.0 4-lanes)
        2x RTL8125 2.5G Ethernet
        Onboard AP6275P for WIFI6/BT5
        32GB/64GB/128GB eMMC
        MicroSD card slot
        1x USB2.0, 1x USB3.0 Type-A, 1x US3.0 Type-C
        1x HDMI Output, 1x type-C DP Output

Functions work normally:
        USB2.0 Host
        USB3.0 Type-A Host
        M.2 Key M (PCIe 3.0 4-lanes)
        2x RTL8125 2.5G Ethernet
        eMMC
        MicroSD card

More information can be obtained from the following website
        https://docs.armsom.org/armsom-sige7

Signed-off-by: Jianfeng Liu <liujianfeng1994@gmail.com>
Reviewed-by: Weizhao Ouyang <weizhao.ouyang@arm.com>
Link: https://lore.kernel.org/r/20240420034300.176920-4-liujianfeng1994@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>