[llvm] Use local fork of llvm-project
Forked from `https://github.com/llvm/llvm-project`
url = https://github.com/riscv/riscv-gnu-toolchain.git
[submodule "toolchain/llvm-project"]
path = toolchain/llvm-project
- url = https://github.com/llvm/llvm-project
+ url = git@iis-git.ee.ethz.ch:mempool/llvm-project.git
[submodule "toolchain/halide"]
path = toolchain/halide
url = https://github.com/halide/Halide.git
