[2/4] powerpc: Add -Werror at arch/powerpc level

[Michael Ellerman]

On Wed, 2018-10-10 at 05:13:06 UTC, Michael Ellerman wrote:
> Back when I added -Werror in commit ba55bd74360e ("powerpc: Add
> configurable -Werror for arch/powerpc") I did it by adding it to most
> of the arch Makefiles.
> 
> At the time we excluded math-emu, because apparently it didn't build
> cleanly. But that seems to have been fixed somewhere in the interim.
> 
> So move the -Werror addition to the top-level of the arch, this saves
> us from repeating it in every Makefile and means we won't forget to
> add it to any new sub-dirs.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/23ad1a2700725d46ee7760920974c6

cheers