[upstream-update] update header inclusion for PreprocessorOptions

The PreprocessorOptions type was moved into a separate header in clang.  Update
the inclusion to fix the compilation.

Author: compnerd

lib/ClangImporter/ClangImporter.cpp

@@ -48,6 +48,7 @@
 #include "clang/Serialization/ASTReader.h"
 #include "clang/Serialization/ASTWriter.h"
 #include "clang/Lex/Preprocessor.h"
+#include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Parse/Parser.h"
 #include "clang/Rewrite/Frontend/FrontendActions.h"
 #include "clang/Rewrite/Frontend/Rewriters.h"

lib/IDE/Utils.cpp

@@ -22,6 +22,7 @@
 #include "clang/CodeGen/ObjectFilePCHContainerOperations.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/TextDiagnosticBuffer.h"
+#include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Serialization/ASTReader.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/MemoryBuffer.h"