Support for RISC-V architecture

[amgrigoriev]

Use case
RISC-V is an upcoming CPU architecture with very energy-efficient processors. At the moment, it is possible to build numpy, scipy and sklearn for RISC-V platform using publicly available RISC-V toolchains. It looks like there is no any critical obstacle for RISC-V support in oneDAL. Such a support could also enable sklearnex on RISC-V.

Proposal

• Add RISC-V support for oneDAL

[keeranroth]

There is a pull request open for comments at #2737

[icfaust]

@keeranroth since #2737 has been merged, can we close this?

[keeranroth]

@icfaust I think that this issue can be closed. We still need some implementations for some of the statistics functions that currently don't call through to anything on Arm or RISC-V, but I think that is for another ticket. We can build and run some examples already with the current implementation