ARM: bcm2835: Drop the init_irq() hook

This is the default function that gets called if the hook is NULL.
Signed-off-by: NEric Anholt <eric@anholt.net>
Acked-by: NStephen Warren <swarren@wwwdotorg.org>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

arch/arm/mach-bcm/board_bcm2835.c

@@ -113,7 +113,6 @@ static const char * const bcm2835_compat[] = {
 };
 
 DT_MACHINE_START(BCM2835, "BCM2835")
-	.init_irq = irqchip_init,
 	.init_machine = bcm2835_init,
 	.restart = bcm2835_restart,
 	.dt_compat = bcm2835_compat