[testsuite patch] avoid test when compile options is conflict with default mthumb

[Mike Stump]

On Dec 8, 2014, at 7:06 PM, Wang Deqiang <wang.deqiang@linaro.org> wrote:
> This is a ping for
> 
> https://gcc.gnu.org/ml/gcc-patches/2014-10/msg01049.html

Seems reasonable enough.  I was hoping the arm folks would chime in, we should have enough of them to review.  Let’s given them two more days, and if no comments, Ok.  If they comment then seems reasonable to let them have the final say.