images: add generic-x86_64
I would like to wait until https://gitlab.com/postmarketOS/pmaports/-/merge_requests/4732 is merged before merging this, so that images include all fw (to support as many devices as possible)
I would like to wait until https://gitlab.com/postmarketOS/pmaports/-/merge_requests/4732 is merged before merging this, so that images include all fw (to support as many devices as possible)