RFA: Patch: Change FRV 'mdrotli' instruction to accept a signed immediate

[Nick Clifton]

Hi Dave,

> You've begun work at an interesting point in the life of this 
> port.

You are the master of understatment sir :-)

> In the meantime, please commit your changes to both copies please.

Done.

> I will be changing the tools to use the new files asap and, once we 
> verify that the tools still work, we'll switch over.
>
> Of course, if you would like to make the switch, then please be my
> guest :-)

Oh I'll leave that one to you, thanks!

Cheers
        Nick