Change in coreboot[master]: Docs/project_ideas: Implement the ARM BBR spec in coreboot

[Paul Menzel (Code Review)]

Attention is currently required from: Arthur Heymans, Felix Singer, Angel Pons, Julius Werner, ron minnich.
Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63034 )

Change subject: Docs/project_ideas: Implement the ARM BBR spec in coreboot
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Patch Set 4: Code-Review+1

(3 comments)

File Documentation/contributing/project_ideas.md:

https://review.coreboot.org/c/coreboot/+/63034/comment/42302fc9_a5724e5a 
PS4, Line 236: Operating
operating

https://review.coreboot.org/c/coreboot/+/63034/comment/ba3b3672_26841c64 
PS4, Line 241: Currently coreboot has no support for SMBIOS or ACPI.
             : coreboot also does not support runtime services by design.
             : The mandated UEFI runtime services seem only useful to provide Linux both
             : SMBIOS & ACPI.
Re-flow?

https://review.coreboot.org/c/coreboot/+/63034/comment/4814c9a2_285faf4f 
PS4, Line 259: Payloads
payloads