[PATCH] powerpc: Fix build failures with current GCC

[Gabriel F. T. Gomes]

On Wed, May 29 2019, Tulio Magno Quites Machado Filho wrote:
> 
> LGTM with these changes.
> 
> Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>

Thanks.  Pushed with the suggested changes.