Specify dependencies specifically for building coreboot toolchains in the file, so they are not conflated with the dependencies required for building firmware-open.
Remove building the toolchain when building firmware, so that the new script is the single source for building coreboot toolchains.
Specify dependencies specifically for building coreboot toolchains in the file, so they are not conflated with the dependencies required for building firmware-open.
Remove building the toolchain when building firmware, so that the new script is the single source for building coreboot toolchains.