ARM: at91: at91 based machines specify their own irq handler at run time

SOC_AT91SAM9 selects MULTI_IRQ_HANDLER in order to let machines specify their
own IRQ handler at run time.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/board-gsia18s.c

@@ -31,6 +31,7 @@
 #include <asm/mach/arch.h>
 
 #include <mach/board.h>
+#include <mach/at91_aic.h>
 #include <mach/at91sam9_smc.h>
 #include <mach/gsia18s.h>
 #include <mach/stamp9g20.h>
@@ -575,6 +576,7 @@ static void __init gsia18s_board_init(void)
 MACHINE_START(GSIA18S, "GS_IA18_S")
 	.timer		= &at91sam926x_timer,
 	.map_io		= at91_map_io,
+	.handle_irq	= at91_aic_handle_irq,
 	.init_early	= gsia18s_init_early,
 	.init_irq	= at91_init_irq_default,
 	.init_machine	= gsia18s_board_init,