ARM: UniPhier: add device tree sources

This commit adds basic device tree sources for UniPhier SoCs/boards.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index e5846ea..01df9a9 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -32,6 +32,10 @@
 	tegra114-dalmore.dtb \
 	tegra124-jetson-tk1.dtb \
 	tegra124-venice2.dtb
+dtb-$(CONFIG_ARCH_UNIPHIER) += \
+	uniphier-ph1-pro4-ref.dtb \
+	uniphier-ph1-ld4-ref.dtb \
+	uniphier-ph1-sld8-ref.dtb
 dtb-$(CONFIG_ZYNQ) += zynq-zc702.dtb \
 	zynq-zc706.dtb \
 	zynq-zed.dtb \