[clang] [llvm] [Clang][LLVM] Disable NonLazyBind when pointer authentication is enabled (PR #188638)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

If there's really no way to satisfy the proper security properties with nonlazybind, we should fix the AArch64 backend to reject it.  Otherwise, we should make it work.

I don't have a strong opinion on what we should do if the user passes -fno-plt.

https://github.com/llvm/llvm-project/pull/188638