ARM: dts: uniphier: add ProXstream2 and PH1-LD6b SoC/board support

Initial version of DTSI for ProXstream2 and PH1-LD6b and DTS for
PH1-LD6b reference board.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[olof: sort Makefile entries]
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index f1cc5b3..f47c130 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -663,10 +663,11 @@
 	ste-ccu8540.dtb \
 	ste-ccu9540.dtb
 dtb-$(CONFIG_ARCH_UNIPHIER) += \
-	uniphier-ph1-sld3-ref.dtb \
 	uniphier-ph1-ld4-ref.dtb \
+	uniphier-ph1-ld6b-ref.dtb \
 	uniphier-ph1-pro4-ref.dtb \
-	uniphier-ph1-sld8-ref.dtb
+	uniphier-ph1-sld3-ref.dtb \
+	uniphier-ph1-sld8-ref.dtb 
 dtb-$(CONFIG_ARCH_VERSATILE) += \
 	versatile-ab.dtb \
 	versatile-pb.dtb