[LTP] [RFC PATCH 2/2] travis: Add 2x cross-compile ARM build

[Cyril Hrubis]

Hi!
> Builds replace native gcc-4.9 and gcc-6 builds to keep max 10 build
> jobs in travis.

So the cross compilers are gcc-4.x and gcc-6.x? I ask since we just ask
for arm cross compilers without a version in the script below.

I that is true I suppose that the cross compiler versions may change
without us noticing, which is not that big deal but it may be better to
select specific version instead if possible.

-- 
Cyril Hrubis
chrubis@suse.cz