Add missing features for Haswell, too

[ms178]

Looking at b026c9e and llvm/include/llvm/TargetParser/X86TargetParser.def in particular, I've noticed that the entries for Haswell lack some features: BMI2 and AES are supported on many client and server Haswell CPUs which are still in use today (appearently some Pentiums and Celerons of that generation don't support all of these - maybe a seperate target should be introduced for these low-end models ("haswell-noavx2") wheras the "haswell" target should gain these features by default?).

Also see this GCC bug entry for reference: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104683

@FreddyLeaf as he implemented the missing features for the other targets.

[llvmbot]

@llvm/issue-subscribers-backend-x86

[ms178]

Closing in protest due to (https://seylaw.blogspot.com/2025/05/when-compiler-engineers-act-as-judges.html)