There is an updated pull request by q66 against master on the void-packages repository

https://github.com/void-ppc/void-packages runit-void
https://github.com/void-linux/void-packages/pull/15680

runit-void: add hvc0 and hvsi0 agetty services
This backports from the `void-runit` repo. It just adds these two default services to scratch my (and other people's) itches.

A patch file from https://github.com/void-linux/void-packages/pull/15680.patch is attached