Commit ebafed7a ("ARM: irq: Call irqchip_init if no init_irq function is
specified") removed the need to explictly setup the init_irq field in
the machine description when using only irqchip_init. Remove that
declaration for vexpress as well.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NPawel Moll <pawel.moll@arm.com>