imx8mn: Add LPDDR4 EVK board support

Add support for iMX8MN LPDDR4 EVK board which uses 2GB LPDDR4 and
PCA9450B PMIC.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index cedddd3..a5e836e 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -799,6 +799,7 @@
 	imx8mm-verdin.dtb \
 	phycore-imx8mm.dtb \
 	imx8mn-ddr4-evk.dtb \
+	imx8mn-evk.dtb \
 	imx8mq-evk.dtb \
 	imx8mm-beacon-kit.dtb \
 	imx8mn-beacon-kit.dtb \