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>

arch/arm/mach-imx/mach-scb9328.c

@@ -141,6 +141,7 @@ MACHINE_START(SCB9328, "Synertronixx scb9328")
 	.map_io = mx1_map_io,
 	.init_early = imx1_init_early,
 	.init_irq = mx1_init_irq,
+	.handle_irq = imx1_handle_irq,
 	.timer = &scb9328_timer,
 	.init_machine = scb9328_init,
 MACHINE_END