Change in coreboot[master]: Documentation: Update release notes for Denverton NS deprecation

[Julien Viard de Galbert (Code Review)]

Julien Viard de Galbert has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/47539 )

Change subject: Documentation: Update release notes for Denverton NS deprecation
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Patch Set 1:

I can only help maintaining it as a hobbyist, my day job is no longer to work on that port.

Also it seams that denverton EDS is no longer public, the link on Intel returns only the spec update, so I no longer have access to the full specifications.

I can update code and patches from time to time, test it on one 'scaleway/tagada' board, but without help from Intel, it will be hard to maintain the port.