Merge System into Support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ELF.h b/lib/CodeGen/ELF.h
index fb884c9..e08feeb 100644
--- a/lib/CodeGen/ELF.h
+++ b/lib/CodeGen/ELF.h
@@ -23,7 +23,7 @@
 #include "llvm/CodeGen/BinaryObject.h"
 #include "llvm/CodeGen/MachineRelocation.h"
 #include "llvm/Support/ELF.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
 
 namespace llvm {
   class GlobalValue;