[16/21] powerpc: Add missing prototype for init_IRQ

[Michael Ellerman]

On Sun, 2018-02-25 at 17:22:31 UTC, Mathieu Malaterre wrote:
> A function init_IRQ was added without a prototype declared in header irq.h.
> Fix the following warning (treated as error in W=1):
> 
>   CC      arch/powerpc/kernel/irq.o
> arch/powerpc/kernel/irq.c:662:13: error: no previous prototype for ‘init_IRQ’ [-Werror=missing-prototypes]
>  void __init init_IRQ(void)
>              ^~~~~~~~
> cc1: all warnings being treated as errors
> 
> Signed-off-by: Mathieu Malaterre <malat at debian.org>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/23a6d8b9634897add6ebff32372f34

cheers