arm: mvebu: Add Helios4 Armada 38x initial support

The helios4 is built on the SolidRun Armada 38x SOM.
The port os based on the ClearFog board, using information from
https://github.com/helios-4/u-boot-marvell as well as dtb input
from https://github.com/helios-4/linux-marvell

Signed-off-by: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: Dennis Gilmore <dgilmore@redhat.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 790571b..3dcd6dd 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -91,6 +91,7 @@
 	armada-375-db.dtb			\
 	armada-388-clearfog.dtb			\
 	armada-388-gp.dtb			\
+	armada-388-helios4.dtb			\
 	armada-385-amc.dtb			\
 	armada-7040-db.dtb			\
 	armada-7040-db-nand.dtb			\