Merge System into Support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/EndianTest.cpp b/unittests/Support/EndianTest.cpp
index d917293..6fe0247 100644
--- a/unittests/Support/EndianTest.cpp
+++ b/unittests/Support/EndianTest.cpp
@@ -9,7 +9,7 @@
 
 #include "gtest/gtest.h"
 #include "llvm/Support/Endian.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
 #include <cstdlib>
 #include <ctime>
 using namespace llvm;