Adapt for update to clang-r399163.
This is really just a case of including the proper header for a
function.
Bug: http://b/155835175
Test: OUT_DIR=out prebuilts/clang-tools/build-prebuilts.sh
Change-Id: I0523d3ccd8cb502e8c2b8f72f137db4b60fb1dac
diff --git a/tools/versioner/src/Driver.cpp b/tools/versioner/src/Driver.cpp
index 184c3d4..adf93c3 100644
--- a/tools/versioner/src/Driver.cpp
+++ b/tools/versioner/src/Driver.cpp
@@ -42,6 +42,7 @@
#include <llvm/ADT/SmallVector.h>
#include <llvm/ADT/StringRef.h>
#include <llvm/Option/Option.h>
+#include <llvm/Support/Host.h>
#include <llvm/Support/VirtualFileSystem.h>
#include "Arch.h"