[PATCH] powerpc/hwirq: Remove stale forward irq_chip declaration

[Michael Ellerman]

On Thu, 6 Aug 2020 12:19:06 +0000 (UTC), Christophe Leroy wrote:
> Since commit identified below, the forward declaration of
> struct irq_chip is useless (was struct hw_interrupt_type at that time)
> 
> Remove it, together with the associated comment.

Applied to powerpc/next.

[1/1] powerpc/hwirq: Remove stale forward irq_chip declaration
      https://git.kernel.org/powerpc/c/169b9afee572853522901b7cbf34842c0494a887

cheers