DSS: tonka: panda: Make DSI screen default device if not using DVI

Make the DSI screen the default display device if
CONFIG_MACH_OMAP4_PANDA_DVI_PRIMARY is not set.
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 5f951a2..ab23e69 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -755,14 +755,13 @@
 };
 #else
 static struct omap_dss_device *omap4_panda_dss_devices[] = {
-	&omap4_panda_hdmi_device,
-	&omap4_panda_dvi_device,
+	&omap4_panda_dsi_device,
 };
 
 static struct omap_dss_board_info omap4_panda_dss_data = {
 	.num_devices	= ARRAY_SIZE(omap4_panda_dss_devices),
 	.devices	= omap4_panda_dss_devices,
-	.default_device	= &omap4_panda_hdmi_device,
+	.default_device	= &omap4_panda_dsi_device,
 };
 #endif