ARM: socfpga: Add initial support for the ABB SECU board

Add initial support for the ABB SECU board, which is an ArriaV-based
SoCFPGA system with ethernet and booting from Denali NAND.

Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index be4cf02..9c593b2 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -333,6 +333,7 @@
 
 dtb-$(CONFIG_ARCH_SOCFPGA) +=				\
 	socfpga_agilex_socdk.dtb			\
+	socfpga_arria5_secu1.dtb			\
 	socfpga_arria5_socdk.dtb			\
 	socfpga_arria10_socdk_sdmmc.dtb			\
 	socfpga_cyclone5_mcvevk.dtb			\