ARM: mxs: add support for I2SE's duckbill series

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 5ef1b30..107069d 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -185,6 +185,7 @@
 	imx28-cfa10056.dtb \
 	imx28-cfa10057.dtb \
 	imx28-cfa10058.dtb \
+	imx28-duckbill.dtb \
 	imx28-evk.dtb \
 	imx28-m28cu3.dtb \
 	imx28-m28evk.dtb \