[coreboot-gerrit] [M] Change in coreboot[master]: soc/amd/{CZN,MDN,PCO}: Fix building with only single RW region

[Fred Reitberger (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Matt DeVillier, Felix Held.

Fred Reitberger has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68126 )

Change subject: soc/amd/{CZN,MDN,PCO}: Fix building with only single RW region
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Patch Set 1: Code-Review+1