Hi all,

According to the TRM for Neoverse V2 the Memory Tagging and RNG features
are optional configurations of the core and may not always be present.
Therefore -mcpu=neoverse-v2 shouldn't enable them, similar to how the crypto extensions aren’t enabled by default.

Bootstrapped and tested on aarch64-none-linux-gnu.
Does this reasoning make sense?
Thanks,
Kyrill