[S] Change in coreboot[main]: soc/intel/xeon_sp: Add acpigen_write_PRT_pre_routed

[Martin L Roth (Code Review)]

Attention is currently required from: Alicja Michalska, Arthur Heymans, Christian Walter, Jincheng Li, Johnny Lin, Jonathan Zhang, Patrick Rudolph, Shuo Liu, Tim Chu.

Martin L Roth has posted comments on this change by Shuo Liu. ( https://review.coreboot.org/c/coreboot/+/82253?usp=email )

Change subject: soc/intel/xeon_sp: Add acpigen_write_PRT_pre_routed
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Patch Set 8: Code-Review+2