Make the EDis tables const.

llvm-svn: 150304
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.h b/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
index d9e975c..4a5a8c2 100644
--- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
+++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
@@ -123,7 +123,7 @@
                               raw_ostream &cStream) const;
 
   /// getEDInfo - See MCDisassembler.
-  EDInstInfo *getEDInfo() const;
+  const EDInstInfo *getEDInfo() const;
 private:
   DisassemblerMode              fMode;
 };