[compiler-rt] Reduce build output for tests

Use CMAKE_INSTALL_MESSAGE=LAZY to only print the local libc++(abi)
installation messages for changed files instead of all files.

Pull Request: llvm#115085

Author: arichardson

compiler-rt/cmake/Modules/AddCompilerRT.cmake

@@ -690,6 +690,7 @@ macro(add_custom_libcxx name prefix)
                -DCMAKE_CXX_FLAGS=${LIBCXX_CXX_FLAGS}
                -DCMAKE_BUILD_TYPE=Release
                -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
+               -DCMAKE_INSTALL_MESSAGE=LAZY
                -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY
                -DLLVM_ENABLE_RUNTIMES=libcxx|libcxxabi
                -DLIBCXXABI_USE_LLVM_UNWINDER=OFF