arm64: dts: rockchip: Add Radxa E52C

arm64: dts: rockchip: Add Radxa E52C

Radxa E52C[1] is a compact network computer based on the Rockchip
RK3582 SoC:

- Dual Cortex-A76 and quad Cortex-A55 CPU
- 5TOPS NPU
- 2GB/4GB/8GB LPDDR4 RAM
- 16GB/32GB/64GB on-board eMMC
- microSD card slot
- USB 3.0 Type-A HOST port
- USB Type-C debug port
- USB Type-C power port (5V only)
- 2x 2.5GbE ports

[1] https://radxa.com/products/network-computer/e52c

Signed-off-by: FUKAUMI Naoki <naoki@radxa.com>
Link: https://lore.kernel.org/r/20241226024630.13702-3-naoki@radxa.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>