Fix the VS2012 build after r240285.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_36@240577 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/R600/MCTargetDesc/AMDGPUMCTargetDesc.h

@@ -17,6 +17,7 @@
 #define LLVM_LIB_TARGET_R600_MCTARGETDESC_AMDGPUMCTARGETDESC_H
 
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/DataTypes.h"
 
 namespace llvm {
 class MCAsmBackend;