[llvm] [BOLT] fix print-mem-data not working (PR #156332)

[Paschalis Mpeis via llvm-commits]

https://github.com/paschalis-mpeis commented:

Thanks for your patch @Jianghibo.

This change overrides annotation printing to consider the flag.
Previously it looks like those annotations were always printed, but now would only be printed if `PrintMemData` is true?

Could you add a small test to acompany the patch?

https://github.com/llvm/llvm-project/pull/156332