[L] Change in coreboot[main]: arch/io.h: Add port I/O functions to other architectures

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Alper Nebi Yasak, Arthur Heymans, Jianjun Wang, Julius Werner, Nico Huber, Shelley Chen, ron minnich.

Yu-Ping Wu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/80372?usp=email )

Change subject: arch/io.h: Add port I/O functions to other architectures
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Patch Set 5:

(1 comment)

File src/device/Kconfig:

https://review.coreboot.org/c/coreboot/+/80372/comment/a21df7fc_93854de9 :
PS5, Line 532: 	  CPU communicate with peripheral devices over PCI I/O space.
> +Shelley, +Yu-Ping, do you know more details about how PCI I/O accesses work on Arm? Do the PCI devi […]

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