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

libva: set driver dir to /usr/lib32/dri on i686
https://github.com/void-linux/void-packages/pull/17806

Description:
If the libva i686 package is installed as a multilib package on x86_64,
it needs to load drivers from /usr/lib32/dri instead of /usr/lib/dri.