Change unsigned to a uint16_t in static disassembler tables to reduce the table size.

llvm-svn: 163594
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.h b/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
index 0dbfa26..981701f 100644
--- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
+++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.h
@@ -78,7 +78,7 @@
   uint16_t operands;
 
 #define INSTRUCTION_IDS               \
-  unsigned instructionIDs;
+  uint16_t instructionIDs;
 
 #include "X86DisassemblerDecoderCommon.h"