x86: disassembler macro for condition code

Both CMPccXADD and APX'es {,CF}CMOVcc have almost identical entries
replicated 16 times each. Fold those to just one each by introducing a
%CC macro. (Note that the recording of ->condition_code in print_insn()
is merely for completeness for now; it's not used as long as only
VEX/EVEX encodings would consume it.)

This then also renders condition codes printed consistent across all
respective insns; CMPxxXADD had a number of outliers so far.