[S] Change in coreboot[main]: Documentation/index.md: Add coreboot's blob policy

[Paul Menzel (Code Review)]

Attention is currently required from: Lean Sheng Tan, Martin L Roth, Patrick Georgi, Subrata Banik, Werner Zeh.

Paul Menzel has posted comments on this change by Werner Zeh. ( https://review.coreboot.org/c/coreboot/+/82086?usp=email )

Change subject: Documentation/index.md: Add coreboot's blob policy
......................................................................

Patch Set 3:

(3 comments)

File Documentation/index.md:

https://review.coreboot.org/c/coreboot/+/82086/comment/f9d93557_db745d87?usp... :
PS3, Line 154: proprietary UEFI
             : implementations
Remove UEFI?

https://review.coreboot.org/c/coreboot/+/82086/comment/02166698_55a01246?usp... :
PS3, Line 177: Please see additionally 
Remove the trailing space?

https://review.coreboot.org/c/coreboot/+/82086/comment/585d3fe1_606542f6?usp... :
PS3, Line 179: 
Where should that discussion take place? The commit message should elaborate a way forward to replace the blob. Also, a new blob should be announced on the mailing list?