Change in coreboot[master]: mb/google/guybrush: Define ACPI Power Resources for FPMCU

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Raul Rangel, Rob Barnes, Felix Held.
Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/58705 )

Change subject: mb/google/guybrush: Define ACPI Power Resources for FPMCU
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Patch Set 2:

(1 comment)

File src/mainboard/google/guybrush/variants/guybrush/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/58705/comment/41be49fb_a5b74aaf 
PS1, Line 177: enable_gpio
> Do we need to set enable_delay_ms and reset_off_delay_ms? I'm not sure what the timing requirements  […]

Referring to CB:37459 and few internal docs:

PowerUp: Assert EN_PWR_FP -> 3 ms delay -> De-assert FPMCU_RST_ODL
Shutdown: De-assert EN_PWR_FP -> Assert FPMCU_RST_ODL
Reboot: Shutdown -> 200 ms delay -> PowerUp