ARM i.MX boards: use CONFIG_MULTI_IRQ_HANDLER

Also, add handle_irq callbacks to machine descriptors.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-imx/mach-mx1ads.c b/arch/arm/mach-imx/mach-mx1ads.c
index 5cd8bee..842859c 100644
--- a/arch/arm/mach-imx/mach-mx1ads.c
+++ b/arch/arm/mach-imx/mach-mx1ads.c
@@ -149,6 +149,7 @@
 	.map_io = mx1_map_io,
 	.init_early = imx1_init_early,
 	.init_irq = mx1_init_irq,
+	.handle_irq = imx1_handle_irq,
 	.timer = &mx1ads_timer,
 	.init_machine = mx1ads_init,
 MACHINE_END
@@ -158,6 +159,7 @@
 	.map_io = mx1_map_io,
 	.init_early = imx1_init_early,
 	.init_irq = mx1_init_irq,
+	.handle_irq = imx1_handle_irq,
 	.timer = &mx1ads_timer,
 	.init_machine = mx1ads_init,
 MACHINE_END