[llvm] [AArch64][PAC][MC][ELF] Support PAuth ABI compatibility tag (PR #85236)

[Daniil Kovalev via llvm-commits]

kovdan01 wrote:

> Could you consider adding a test for the verifier?

@DanielKristofKiss Thanks for suggestion, see llvm/test/Verifier/module-flags-note-gnu-property-elf-pauthabi.ll added in 2f6dc0adbee9e09176e86dd9960b8d353c31decf

https://github.com/llvm/llvm-project/pull/85236