Adding RISC-V to the official platform list

[Ngie Cooper]

> On Mar 26, 2017, at 16:08, Alan Somers <asomers at freebsd.org> wrote:
> 
> The committers guide[1] states that RISC-V is a Tier 3 architecture,
> but the website's platform list [2] doesn't mention RISC-V at all.
> Who should we bug to update the website?
> 
> [1] https://www.freebsd.org/doc/en_US.ISO8859-1/articles/committers-guide/archs.html
> [2] https://www.freebsd.org/platforms/index.html

Hi Alan,

The directory's here in svn: https://svnweb.freebsd.org/doc/head/en_US.ISO8859-1/htdocs/platforms/

I'd probably add Ruslan, the riscv dev, to the review.

All else fails, file a doc bug against the website.

HTH,
-Ngie

PS it's only really supported on 12.x. 11.x isn't close to supported, from what I've seen with the build failures on ci.freebsd.org (in part due to missing backports)...