arm64: dts: rockchip: add DTs for 100ASK DShanPi A1

arm64: dts: rockchip: add DTs for 100ASK DShanPi A1

Add device tree for 100ASK DShanPi A1 with Rockchip RK3576 SoC
(4x Cortex-A72, 4x Cortex-A53, Mali-G52 MC3 GPU, 6 TOPS NPU). Enables
basic booting and connectivity.

Link: https://wiki.dshanpi.org/en/docs/DshanPi-A1/intro/
The device contains the following hardware that is tested/working:
 - 32 or 64GB eMMC
 - SDMMC card slot
 - M.2 WiFi slot
 - 4 or 8GB of RAM
 - 2x 1Gbps Ethernet
 - 2x USB 3.2 Gen 1 Type-A ports
 - USB 3.0 port
 - HDMI port

Signed-off-by: Hsun Lai <i@chainsx.cn>
Link: https://patch.msgid.link/77BB123A1F1E3D11+20251014021623.286121-3-i@chainsx.cn
Signed-off-by: Heiko Stuebner <heiko@sntech.de>