There is a new pull request by stenstorp against master on the void-packages repository

https://github.com/stenstorp/void-packages base-system
https://github.com/void-linux/void-packages/pull/11502

base-system: Add Linux dependency on ppc
Now that all ppc variants have a kernel config, include linux in base-system.

A patch file from https://github.com/void-linux/void-packages/pull/11502.patch is attached