ARM: pxa: enable MULTI_IRQ_HANDLER for all boards

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c
index fbe9e02..e9b38cd 100644
--- a/arch/arm/mach-pxa/z2.c
+++ b/arch/arm/mach-pxa/z2.c
@@ -704,6 +704,7 @@
 	.boot_params	= 0xa0000100,
 	.map_io		= pxa27x_map_io,
 	.init_irq	= pxa27x_init_irq,
+	.handle_irq	= pxa27x_handle_irq,
 	.timer		= &pxa_timer,
 	.init_machine	= z2_init,
 MACHINE_END