[coreboot-gerrit] Change in coreboot[master]: mb/google/brya/var/brask: Configurate the GPIOs of LAN

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: David Wu, Zhuohao Lee, Alan Huang.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/58105 )

Change subject: mb/google/brya/var/brask: Configurate the GPIOs of LAN
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Patch Set 6:

(1 comment)

File src/mainboard/google/brya/variants/brask/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/58105/comment/c1d1f403_f7265f90 
PS5, Line 86: 				register "stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_H22)"
> From 8125 spec., this pin will not disable wake-on-lan. We will double check it.

So this PowerResource will look sorta like this:

Method (_ON, 0)
{
       // drive GPP_H22 high 
       // sleep for 12 ms
}

and this is the LAN's ISOLATE pin, which is active low, so I think this is right?
PERST is connected to PLTRST# and power is controlled by the S5 rails.