Add a couple missing includes; found while analyzing LLVM headers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143716 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/DefaultPasses.h

@@ -14,6 +14,8 @@
 #ifndef LLVM_DEFAULT_PASS_SUPPORT_H
 #define LLVM_DEFAULT_PASS_SUPPORT_H
 
+#include <llvm/PassSupport.h>
+
 namespace llvm {
 
 class PassManagerBase;

include/llvm/PassAnalysisSupport.h

@@ -19,6 +19,7 @@
 #ifndef LLVM_PASS_ANALYSIS_SUPPORT_H
 #define LLVM_PASS_ANALYSIS_SUPPORT_H
 
+#include "llvm/Pass.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include <vector>