[S] Change in coreboot[main]: device/path: rename domain path struct element to 'domain_id'

[Shuo Liu (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, Felix Held, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Martin L Roth, Patrick Rudolph, Tim Chu.

Shuo Liu has posted comments on this change by Felix Held. ( https://review.coreboot.org/c/coreboot/+/83677?usp=email )

Change subject: device/path: rename domain path struct element to 'domain_id'
......................................................................

Patch Set 2: Code-Review+1