gn build: Merge r960255

llvm-svn: 360343

Author: nico

llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn

@@ -157,6 +157,9 @@ copy("Headers") {
     "cuda_wrappers/complex",
     "cuda_wrappers/new",
     "ppc_wrappers/mmintrin.h",
+    "openmp_wrappers/math.h",
+    "openmp_wrappers/cmath",
+    "openmp_wrappers/__clang_openmp_math.h",
   ]
   outputs = [
     "$clang_resource_dir/include/{{source_target_relative}}",