[aarch64-port-dev ] Changes to Bellsoft/Marvell method of developing intrinsics

[Ningsheng Jian (Arm Technology China)]

Hi Derek,

> 
> We will also begin back-reviewing existing complex intrinsics. If other members
> of the community are interested in working on this we can coordinate to ensure
> coverage.
> 

We (Arm) are happy to co-work on this and Pengfei has just started to investigate some existing complex string intrinsics.

Thanks,
Ningsheng