[coreboot-gerrit] Change in coreboot[master]: device: Enable resource allocation above 4G boundary with allocator v4

[Nico Huber (Code Review)]

Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/41466 )

Change subject: device: Enable resource allocation above 4G boundary with allocator v4
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Patch Set 4:

Is there a particular reason not to move all prefmem resources
above 4G?

The idea came along with the thought of resource assignment from
top to bottom (stealing from the end of the last memrange): If
we'd always do that, we wouldn't even need a quirk (IORESOURCE_
ABOVE_4G). We could simply default to the upper-most possible
placement and then opt out by constraining the domain resource
or individual resource's `.limit`.