Add initial support for TI SK-AM69 board

[glneo]

Description

Hello all,

This PR adds support for the Texas Instruments SK-AM69. Features,
schematics, and purchase links can be found on the board page[0].

Notable features:

8x 64-bit Arm-Cortex A72 microprocessor
32 TOPS deep learning hardware-accelerated edge AI
32GB LPDDR4‐4266 with support for inline ECC
H.264/H.265 video encode/decode
Three CSI-2 ports compatible with Raspberry Pi
DisplayPort (v1.4) 4K resolution with MST support and HDMI
Three USB 3.0 Type A ports, one USB 3.0 Type C port
Gigabit Ethernet and 4x CAN-FD Headers
M.2 Key E and M.2 Key M connectors

Thanks!

[0] https://www.ti.com/tool/SK-AM69

How Has This Been Tested?

• Build/Boot tested Trixie CLI/Minimal on Current(v6.6) and Edge(v6.12) kernels
• Build/Boot tested Noble CLI/Minimal on Current(v6.6) and Edge(v6.12) kernels
• Gbit Ethernet works
• HDMI works
• USB 3.0 ports work

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[HeyMeco]

Looks great
Offtopic: If you have the chance to test out a PCIe GPU on that board and report back that would be really interesting

[Grippy98]

I started on that path a while before any of the ARM drivers existed but I got an RTX3080 to report correctly with no DMESG errors so PCIe controller didn’t seem to be an issue.

Still have it setup at home so we can do a hack session or something on Discord one of these days if you guys want.

[HeyMeco]

@Grippy98 that sounds awesome!
Are you in the armbian discord already? https://discord.gg/armbian

[Grippy98]

Yup, pinged you in the main chat. Andrei / Grippy on there