[U-Boot] toolchain for riscv?

[Hannes Schmelzer]

hi,

just tried to run moveconfig.py, having trouble to find the toolchain 
for "riscv".

I already did run "tools/buildman/buildman.py --fetch-arch=all", but no 
toolchain for riscv was downloaded.

where to get correct toolchain?

cheers,
Hannes