[v2] powerpc/mm/radix: use do/while(0) trick for single statement block

[Michael Ellerman]

On Mon, 2018-04-23 at 19:36:38 UTC, Mathieu Malaterre wrote:
> In commit 7a22d6321c3d ("powerpc/mm/radix: Update command line parsing for
> disable_radix") an `if` statement was added for a possible empty body
> (prom_debug).
> 
> Fix the following warning, treated as error with W=1:
> 
>   arch/powerpc/kernel/prom_init.c:656:46: error: suggest braces around empty body in an ‘if’ statement [-Werror=empty-body]
> 
> Suggested-by: Randy Dunlap <rdunlap at infradead.org>
> Signed-off-by: Mathieu Malaterre <malat at debian.org>
> Acked-by: Randy Dunlap <rdunlap at infradead.org>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/85aa4b98419d74dd5cc914e0893498

cheers