[ARM] sa1111: allow cascaded IRQs to be used by platforms

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c
index 051ec0f..259cb2c 100644
--- a/arch/arm/mach-sa1100/badge4.c
+++ b/arch/arm/mach-sa1100/badge4.c
@@ -51,6 +51,10 @@
 	},
 };
 
+static struct sa1111_platform_data sa1111_info = {
+	.irq_base	= IRQ_BOARD_END,
+};
+
 static u64 sa1111_dmamask = 0xffffffffUL;
 
 static struct platform_device sa1111_device = {
@@ -59,6 +63,7 @@
 	.dev		= {
 		.dma_mask = &sa1111_dmamask,
 		.coherent_dma_mask = 0xffffffff,
+		.platform_data = &sa1111_info,
 	},
 	.num_resources	= ARRAY_SIZE(sa1111_resources),
 	.resource	= sa1111_resources,