Teach llvm-readobj to print ELF program headers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179363 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-readobj/ObjDumper.h b/tools/llvm-readobj/ObjDumper.h
index 8d191cb..6918e28 100644
--- a/tools/llvm-readobj/ObjDumper.h
+++ b/tools/llvm-readobj/ObjDumper.h
@@ -38,6 +38,7 @@
   // Only implemented for ELF at this time.
   virtual void printDynamicTable() { }
   virtual void printNeededLibraries() { }
+  virtual void printProgramHeaders() { }
 
 protected:
   StreamWriter& W;