ARM: nomadik: Remove init_irq declaration in machine description

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 nomadik as well.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-nomadik/cpu-8815.c

@@ -25,7 +25,6 @@
 #include <linux/slab.h>
 #include <linux/irq.h>
 #include <linux/dma-mapping.h>
-#include <linux/irqchip.h>
 #include <linux/platform_data/clk-nomadik.h>
 #include <linux/platform_data/pinctrl-nomadik.h>
 #include <linux/pinctrl/machine.h>
@@ -323,7 +322,6 @@ static const char * cpu8815_board_compat[] = {
 
 DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
 	.map_io		= cpu8815_map_io,
-	.init_irq	= irqchip_init,
 	.init_time	= cpu8815_timer_init_of,
 	.init_machine	= cpu8815_init_of,
 	.restart	= cpu8815_restart,