[M] Change in coreboot[master]: /: Include <device/mmio.h> instead of <arch/mmio.h>

[Elyes Haouas (Code Review)]

Attention is currently required from: Raul Rangel, Jakub Czapiga, Matt DeVillier, Stefan Reinauer, Angel Pons, Piotr Król, Jason Glenesk, Tarun Tuli, Michał Żygowski, Subrata Banik, Werner Zeh, Fred Reitberger, Felix Held.

Elyes Haouas has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/70291 )

Change subject: /: Include <device/mmio.h> instead of <arch/mmio.h>
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/70291/comment/35eb339f_d79de2b6 
PS2, Line 7: /
> This might be misleading. […]

Done

Patchset:

PS2:
> If you change it from arch to device you should take care of the right include order then (sort it c […]

Done