IWYU for llvm-config.h in clang. See r331124 for details.

llvm-svn: 331177
diff --git a/clang/unittests/Basic/FileManagerTest.cpp b/clang/unittests/Basic/FileManagerTest.cpp
index 5b7a7db..5aa1c02 100644
--- a/clang/unittests/Basic/FileManagerTest.cpp
+++ b/clang/unittests/Basic/FileManagerTest.cpp
@@ -12,7 +12,6 @@
 #include "clang/Basic/FileSystemStatCache.h"
 #include "clang/Basic/VirtualFileSystem.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Config/llvm-config.h"
 #include "llvm/Support/Path.h"
 #include "gtest/gtest.h"
 
diff --git a/clang/unittests/Basic/VirtualFileSystemTest.cpp b/clang/unittests/Basic/VirtualFileSystemTest.cpp
index fe2e776..383c1ff 100644
--- a/clang/unittests/Basic/VirtualFileSystemTest.cpp
+++ b/clang/unittests/Basic/VirtualFileSystemTest.cpp
@@ -9,6 +9,7 @@
 
 #include "clang/Basic/VirtualFileSystem.h"
 #include "llvm/ADT/Triple.h"
+#include "llvm/Config/llvm-config.h"
 #include "llvm/Support/Errc.h"
 #include "llvm/Support/Host.h"
 #include "llvm/Support/MemoryBuffer.h"