mx35pdk: add debug board support

Enable debug board support for mx35pdk.
Signed-off-by: Xiao Jiang <jgq516@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx3/Kconfig

@@ -143,6 +143,7 @@ config MACH_ARMADILLO5X0
 config MACH_MX35_3DS
 	bool "Support MX35PDK platform"
 	select ARCH_MX35
+	select MXC_DEBUG_BOARD
 	select IMX_HAVE_PLATFORM_IMX_UART
 	select IMX_HAVE_PLATFORM_MXC_NAND
 	select IMX_HAVE_PLATFORM_ESDHC

arch/arm/mach-mx3/mach-mx35_3ds.c

@@ -38,11 +38,15 @@
 #include <mach/hardware.h>
 #include <mach/common.h>
 #include <mach/iomux-mx35.h>
+#include <mach/irqs.h>
+#include <mach/3ds_debugboard.h>
 #include <mach/mxc_ehci.h>
 
 #include "devices-imx35.h"
 #include "devices.h"
 
+#define EXPIO_PARENT_INT	(MXC_INTERNAL_IRQS + GPIO_PORTA + 1)
+
 static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };
@@ -148,6 +152,10 @@ static void __init mxc_board_init(void)
 
 	imx35_add_mxc_nand(&mx35pdk_nand_board_info);
 	imx35_add_esdhc(0, NULL);
+
+	if (mxc_expio_init(MX35_CS5_BASE_ADDR, EXPIO_PARENT_INT))
+		pr_warn("Init of the debugboard failed, all "
+				"devices on the debugboard are unusable.\n");
 }
 
 static void __init mx35pdk_timer_init(void)