arm64: dts: rockchip: Add rk3588 Edgeble Neu6B

arm64: dts: rockchip: Add rk3588 Edgeble Neu6B

Neural Compute Module 6B(Neu6B) is a 96boards SoM-CB compute module
based on Rockchip RK3588J from Edgeble AI.

General features:
- Rockchip RK3588J
- up to 32GB LPDDR4x
- up to 128GB eMMC
- 2x MIPI CSI2 FPC
- On module WiFi6/BT

Neural Compute Module 6B(Neu6B) IO board is an industrial form factor
ready-to-use IO board from Edgeble AI.

General features:
- microSD slot
- 1x HDMI Out
- 1x HDMI In
- 2x DP
- 1x eDP
- 2x MIPI DSI connector
- 4x MIPI CSI2 connector
- 2x USB Host
- 2x USB 3.0 OTG/Host
- 1x SATA
- 1x 2.5Gbps Ethernet
- 1x M.2 B-Key for 4G/5G cards
- 1x M.2 M-Key slot
- 1x Onboard PoE
- 1x RS485, RS232, CAN
- 1x Audio, MIC port
- RTC battery slot
- 40-pin GPIO expansion

Neu6B needs to mount on top of this IO board in order to create a
complete Edgeble Neural Compute Module 6B(Neu6B) IO platform.

Kernel commits:
commit <5f06c3f508f7> ("arm64: dts: rockchip: Add rk3588 Edgeble Neu6
Model B SoM")
commit <3a9181a43b94> ("arm64: dts: rockchip: Add rk3588 Edgeble Neu6
Model B IO")

Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>