MC/AsmParser: Fix TokError() to accept a Twine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108647 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/ELFAsmParser.cpp b/lib/MC/MCParser/ELFAsmParser.cpp
index 8bbc8b3..6b9a672 100644
--- a/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/lib/MC/MCParser/ELFAsmParser.cpp
@@ -14,6 +14,7 @@
 #include "llvm/MC/MCParser/MCAsmLexer.h"
 #include "llvm/MC/MCSectionELF.h"
 #include "llvm/MC/MCStreamer.h"
+#include "llvm/ADT/Twine.h"
 using namespace llvm;
 
 namespace {