Make the disassembler tables const so they end up in read-only memory.

llvm-svn: 117206
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.h b/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
index 9c54262..550cf9d 100644
--- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
+++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
@@ -78,7 +78,7 @@
   const char*             name;
 
 #define INSTRUCTION_IDS               \
-  InstrUID*  instructionIDs;
+  const InstrUID *instructionIDs;
 
 #include "X86DisassemblerDecoderCommon.h"