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-eco920.c b/arch/arm/mach-at91/board-eco920.c
index 8639fbd..8252c72 100644
--- a/arch/arm/mach-at91/board-eco920.c
+++ b/arch/arm/mach-at91/board-eco920.c
@@ -47,11 +47,6 @@
 	at91_set_serial_console(0);
 }
 
-static void __init eco920_init_irq(void)
-{
-	at91rm9200_init_interrupts(NULL);
-}
-
 static struct at91_eth_data __initdata eco920_eth_data = {
 	.phy_irq_pin	= AT91_PIN_PC2,
 	.is_rmii	= 1,
@@ -137,6 +132,6 @@
 	.timer		= &at91rm9200_timer,
 	.map_io		= at91_map_io,
 	.init_early	= eco920_init_early,
-	.init_irq	= eco920_init_irq,
+	.init_irq	= at91_init_irq_default,
 	.init_machine	= eco920_board_init,
 MACHINE_END