[PATCH,wwwdocs] Add news entry for MIPS Release 6 - committed

[Matthew Fortune]

I committed the following patch to wwwdocs having received approval
from Gerald.

Thanks,
Matthew

Index: htdocs/index.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/index.html,v
retrieving revision 1.953
diff -r1.953 index.html
54a55,59
> <dt><span>MIPS Release 6 architecture support</span>
>      <span class="date">[2015-01-20]</span></dt>
>      <dd>Support for MIPS Release 6 (r6) has been contributed by Imagination
>      Technologies.</dd>
>