There's a merged pull request on the void-packages repository

rpi-kernel: add nftables support.
https://github.com/void-linux/void-packages/pull/23840

Description:
Applied from upstream. https://github.com/raspberrypi/linux/commit/fe915debc1925397f78db8bbfc9f488b0ce4e009. Will be in next update. Is already enabled for arm*.

Closes #23662.