ARMv8 Cryptography Extensions missing?

[tarcieri]

Not sure if this is related to #998 or not, but...

It looks like there have been PRs to add the ARM cryptography extensions but I don't see any of them listed here:

https://doc.rust-lang.org/core/arch/aarch64/index.html

@newpavlov suggested on a recent rust-internals thread this might be a regression?

[bjorn3]

When 9142a8a added them for arm32, it accidentally also removed them from AArch64. Presumably the author was under the impression that all intrinsics for arm32 are re-exported for aarch64, which is not the case.

[tarcieri]

Per discussion on #929, it seems like this may be a dup of #1055