[yocto] Do we need run LTP/POSIX tests on qemu?

[Xu, Jiajun]

I think we could skip these tests on QEMU. Some boards do not have enough memory or power CPU for LTP/POSIX testing. That's why we tested QEMU at the beginning.
Yi could help to clarify.

> Hi All,
> 
> I am fixing failed test cases of POSIX tests, and I meet some cases
> just fail on qemu platform just as qemuppc or qemumips. I don't know
> why we test LTP/POSIX on the qemu platforms at the beginning, and I am
> wondering does it worth for us to do that because few people will make
> qemu platforms to get the POSIX or LTP identified.
> 
> Regards,
> Kai

Best Regards,
Jiajun