[L] Change in coreboot[main]: mb/aoostar: Add AOOSTAR R1 (WTR_R1)

[Angel Pons (Code Review)]

Attention is currently required from: Federico Amedeo Izzo, Felix Singer.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/82010?usp=email )

Change subject: mb/aoostar: Add AOOSTAR R1 (WTR_R1)
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Patch Set 11:

(1 comment)

File src/mainboard/aoostar/wtr_r1/devicetree.cb:

https://review.coreboot.org/c/coreboot/+/82010/comment/b0902650_e23229f7 :
PS10, Line 117: 				.clk_req = 2,
> they are educated guesses, unfortunately I don't have the schematics of this board. […]

OK. If you keep the CLK SRCs, but remove the CLK REQs (and the corresponding flags), I think the PCIe ports should still work, and you may be able to drop the Kconfig workarounds:

```
# Setting this makes NVMe SSD not work
config PCIEXP_L1_SUB_STATE
    default n

# Setting this makes 2.5Gb NICs not work
config PCIEXP_CLK_PM
    default n
```