Switch CM3588 to mainline A-TF

[timsurber]

Description

Switch the CM3588 to mainline arm-trusted-firmware, which is supported since the latest release, the version bump for this was merged in armbian a while ago.

Everything works, and this is required for the future HDMI-RX patches on lkml.

I think every RK3588 based boards should be switched, but I can't test that.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• [ x] Actual Board boots and everything seems to be working
• [ x] The UART boot output shows that the change was applied

Checklist:

• [x ] My code follows the style guidelines of this project
• [x ] I have performed a self-review of my own code

[lanefu]

tested from Sdcard... (with OEM image still on emmc)

# Verified-boot: 0
## Checking atf-1 0x00040000 ... sha256(6be9bb150e...) + OK
## Checking u-boot 0x00a00000 ... sha256(dd7c3856ea...) + OK
## Checking fdt-1 0x00af0df8 ... sha256(749be832da...) + OK
## Checking atf-2 0xff100000 ... sha256(20d7ba5854...) + OK
Jumping to U-Boot(0x00a00000) via ARM Trusted Firmware(0x00040000)
Total: 307.772/475.323 ms

NOTICE:  BL31: v2.12.0(release):armbian
NOTICE:  BL31: Built : 02:09:53, Mar  2 2025
INFO:    GICv3 without legacy support detected.
INFO:    ARM GICv3 driver initialized in EL3
INFO:    Maximum SPI INTID supported: 511
INFO:    BL31: Initializing runtime services
INFO:    BL31: Preparing for EL3 exit to normal world
INFO:    Entry point address = 0xa00000
INFO:    SPSR = 0x3c9
ERROR:   Agent 0 Protocol 0x10 Message 0x7: not supported


U-Boot 2025.01-armbian-2025.01-S6d41-P595f-Hf96f-V00b9-Bb703-R448a-dirty (Mar 02 2025 - 02:10:10 +0000)

Model: FriendlyElec CM3588 NAS
DRAM:  16 GiB

[lanefu]

worked on edge and vendor kernel.