[clang] [llvm] [Clang][AArch64] Command-line options for A-profile's Sign Return Address Hardening (PR #176171)

[Anatoly Trosinenko via cfe-commits]

https://github.com/atrosinenko commented:

Sorry for nit-picking iteratively, but here are a few more comments :)

https://github.com/llvm/llvm-project/pull/176171