remove extraneous const qualifier

llvm-svn: 73373
diff --git a/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h b/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
index 5b40e73..547d29b 100644
--- a/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
+++ b/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
@@ -104,7 +104,7 @@
     printLeaMemReference(MI, OpNo, "subreg64");
   }
 
-  bool printAsmMRegister(const MachineOperand &MO, const char Mode);
+  bool printAsmMRegister(const MachineOperand &MO, char Mode);
   bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
                        unsigned AsmVariant, const char *ExtraCode);
   bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,