[PATCH] docs: Add documentation for ARC processors

[Randy Dunlap]

On 11/11/21 12:10 PM, Alexey Brodkin wrote:
> +Important note on ARC processors configurability
> +################################################
> +
> +ARC processors are highly configurable and several configurable options
> +are supported in linux. Some options are transparent to software

                     Linux.

> +(i.e cache geometries, some can be detected at runtime and configured
> +and used accordingly, while some need to be explicitly selected or configured
> +in the kernel's configuration utility (AKA "make menuconfig").
> +
> +However not all configurable options are supported when an ARC processor
> +is to run linux. SoC design teams should refer to "Appendix E:

              Linux.

> +Configuration for ARC Linux" in the ARC HS Databook for configurability
> +guidelines.
> +
> +Following these guidelines and selecting valid configuration options
> +up front is critical to help prevent any unwanted issues during
> +SoC bringup and software development in general.


Rest of it looks good.

Thanks.
-- 
~Randy