The IRReader header is now part of its own library. Update the include
line and the library dependencies to reflect this.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177972 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenAction.cpp b/lib/CodeGen/CodeGenAction.cpp
index 8591961..679cfeb 100644
--- a/lib/CodeGen/CodeGenAction.cpp
+++ b/lib/CodeGen/CodeGenAction.cpp
@@ -23,9 +23,9 @@
 #include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
+#include "llvm/IRReader/IRReader.h"
 #include "llvm/Linker.h"
 #include "llvm/Pass.h"
-#include "llvm/Support/IRReader.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/Timer.h"