bug#18933: ATLAS fails to build on mips

[Ludovic Courtès]

tag 18933 wontfix
close 18933
thanks

The attempt to get ATLAS on MIPS failed; commit 01480b9e disables it
on MIPS.

See
<https://lists.gnu.org/archive/html/guix-devel/2014-11/msg00516.html>
for the discussion.

Ludo’.