[MLIR][IRDL][CMake] Switch to using `setup_host_tool` to fix cross compilation#156606

Moxinilian merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

Zentrik:fix_mlir_irdl_to_cpp_crosscompileZentrik/llvm-project:fix_mlir_irdl_to_cpp_crosscompileCopy head branch name to clipboard