tree a52ed9ecb0cca3e607e427a1162a2114235a9639
parent bf0f740f7c2efadeb4d7989785945e345ecf0fd1
author Cindy Liu <hcindyl@google.com> 1685645605 -0700
committer Cindy Liu <hcindyl@google.com> 1687989597 -0700

Add Kelvin toolchain download flow

Also simplify the riscv-gnu-toolchain download command git-clone flags

Kelvin's binutil branch has a gas/doc target and is not quite compatible
with the old top riscv-gnu-toolchain. Add a small fix function to patch
the Makefile

Bug: 288969056

Change-Id: Ie816c2e683e16f2ad5c7d241c3ef02f8ddfd250d