[gn build] (manually) merge c1e2f73

Author: nico

llvm/utils/gn/secondary/llvm/include/llvm/Config/BUILD.gn

@@ -325,6 +325,7 @@ write_cmake_config("llvm-config") {
     "LLVM_ENABLE_DUMP=",
     "LLVM_DEFAULT_TARGET_TRIPLE=$llvm_target_triple",
     "LLVM_HAS_ATOMICS=1",
+    "LLVM_HAVE_TF_API=",
     "LLVM_HOST_TRIPLE=$llvm_current_triple",
     "LLVM_NATIVE_ARCH=$native_target",
     "LLVM_NATIVE_ASMPARSER=1",