Put some of the X86 formats in a more logical order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201645 91177308-0d34-0410-b5e6-96231b3b80d8
Reduce size of map field in X86 TSFlags since it now requires less bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201646 91177308-0d34-0410-b5e6-96231b3b80d8