[coreboot-gerrit] Change in coreboot[master]: soc/intel/cmn/spi: Add ACPI SSDT extension for fast SPI

[Subrata Banik (Code Review)]

Attention is currently required from: Nico Huber, Paul Menzel, Arthur Heymans, Werner Zeh.
Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63982 )

Change subject: soc/intel/cmn/spi: Add ACPI SSDT extension for fast SPI
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Patch Set 2:

(1 comment)

Patchset:

PS2: 
@werner: what you think about porting UART changes into SPI with proper PNP ID based on the PCI device type.

https://github.com/coreboot/coreboot/blob/b470361e025a59cbdd4bca1631ce6082fc...

I guess your problem statement is valid for any PCI device that gets hidden by FSP UPD policy during boot hence, OS is unable to discover the device unless exposed using ASL.