[coreboot] Toolchain tarballs missing

[Tim Crawford]

It is currently not possible to build the coreboot toolchain due to NASM. The project website (https://nasm.us), which is used to download the source tarball, has been offline for days. While being hosted on GitHub for years now, the project does not use it for creating and distributing releases.

coreboot does have mirrors of tarballs (https://www.coreboot.org/releases/crossgcc-sources/), but the version of NASM used is not present.

- How are the tarballs uploaded to the coreboot mirror in the first place?
- Can someone upload the missing tarball(s) to the mirror?