at91: factorize at91 interrupts init to soc

they are the same except the default priority

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
diff --git a/arch/arm/mach-at91/board-snapper9260.c b/arch/arm/mach-at91/board-snapper9260.c
index c600b14..25cd3ff 100644
--- a/arch/arm/mach-at91/board-snapper9260.c
+++ b/arch/arm/mach-at91/board-snapper9260.c
@@ -55,11 +55,6 @@
 	at91_register_uart(AT91SAM9260_ID_US2, 3, 0);
 }
 
-static void __init snapper9260_init_irq(void)
-{
-	at91sam9260_init_interrupts(NULL);
-}
-
 static struct at91_usbh_data __initdata snapper9260_usbh_data = {
 	.ports		= 2,
 };
@@ -181,7 +176,7 @@
 	.timer		= &at91sam926x_timer,
 	.map_io		= at91_map_io,
 	.init_early	= snapper9260_init_early,
-	.init_irq	= snapper9260_init_irq,
+	.init_irq	= at91_init_irq_default,
 	.init_machine	= snapper9260_board_init,
 MACHINE_END