[PATCH] tools build: Fix test-clang.cpp with Clang 8+

[Maciej S. Szmigiero]

LLVM rL344140 (included in Clang 8+) moved VFS from Clang to LLVM, so paths
to its include files have changed.
This broke the Clang test in tools/build - let's fix it.

Signed-off-by: Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx>
---
 tools/build/feature/test-clang.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/build/feature/test-clang.cpp b/tools/build/feature/test-clang.cpp
index a2b3f092d2f0..7d87075cd1c5 100644
--- a/tools/build/feature/test-clang.cpp
+++ b/tools/build/feature/test-clang.cpp
@@ -1,9 +1,15 @@
 // SPDX-License-Identifier: GPL-2.0
+#include "clang/Basic/Version.h"
+#if CLANG_VERSION_MAJOR < 8
 #include "clang/Basic/VirtualFileSystem.h"
+#endif
 #include "clang/Driver/Driver.h"
 #include "clang/Frontend/TextDiagnosticPrinter.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/Support/ManagedStatic.h"
+#if CLANG_VERSION_MAJOR >= 8
+#include "llvm/Support/VirtualFileSystem.h"
+#endif
 #include "llvm/Support/raw_ostream.h"
 
 using namespace clang;