ARM: picoxcell: 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 picoxcell as well.

[ jiles: removed other, unused irq includes. ]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>

arch/arm/mach-picoxcell/common.c

@@ -8,12 +8,8 @@
  * All enquiries to support@picochip.com
  */
 #include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/irqchip.h>
-#include <linux/irqdomain.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/dw_apb_timer.h>
 
@@ -85,7 +81,6 @@ static void picoxcell_wdt_restart(char mode, const char *cmd)
 DT_MACHINE_START(PICOXCELL, "Picochip picoXcell")
 	.map_io		= picoxcell_map_io,
 	.nr_irqs	= NR_IRQS_LEGACY,
-	.init_irq	= irqchip_init,
 	.init_time	= dw_apb_timer_init,
 	.init_machine	= picoxcell_init_machine,
 	.dt_compat	= picoxcell_dt_match,