imx: Add support for i.MX8MN Beacon EmbeddedWorks devkit.

Beacon EmbeddedWorks is releasing a devkit based on the i.MX8M
Nano SoC consisting of baseboard + SOM.

The kit is based on the same design as the Beacon dev kit with
the i.MX8M Mini.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c0b4d9d..a36b8c7 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -784,6 +784,7 @@
 	imx8mn-ddr4-evk.dtb \
 	imx8mq-evk.dtb \
 	imx8mm-beacon-kit.dtb \
+	imx8mn-beacon-kit.dtb \
 	imx8mq-phanbell.dtb \
 	imx8mp-evk.dtb \
 	imx8mp-phyboard-pollux-rdk.dtb \