powerpc: add kernel parameter iommu_alloc_quiet

[Mauricio Faria de Oliveira]

Hi Michael,

On 09/21/2016 11:34 AM, Mauricio Faria de Oliveira wrote:
> So, the intent is to have a single/common hack that upstream is OK w/,
> then apply that downstream in the multiple distros.  Of course, if you
> are not OK w/ this patch (which is obviously fair) we'll have to try it
> downstream only, and there we can diverge in the implementations.
>
> Please let me know your thoughts on it.

Thanks!

-- 
Mauricio Faria de Oliveira
IBM Linux Technology Center