ARM: UniPhier: add device tree sources for PH1-sLD3

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 01df9a9..187d58c 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -33,6 +33,7 @@
 	tegra124-jetson-tk1.dtb \
 	tegra124-venice2.dtb
 dtb-$(CONFIG_ARCH_UNIPHIER) += \
+	uniphier-ph1-sld3-ref.dtb \
 	uniphier-ph1-pro4-ref.dtb \
 	uniphier-ph1-ld4-ref.dtb \
 	uniphier-ph1-sld8-ref.dtb