llvm/lib/Target: [PR12611] Add "llvm/Support/raw_ostream.h" for Debug build on MSVC.

Thanks to Andy Gibbs, to report the issue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155287 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Hexagon/HexagonISelLowering.cpp

@@ -35,6 +35,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;
 

lib/Target/Mips/MipsISelLowering.cpp

@@ -34,6 +34,8 @@
 #include "llvm/CodeGen/ValueTypes.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+
 using namespace llvm;
 
 // If I is a shifted mask, set the size (Size) and the first bit of the