ARM: uniphier: add ProXstream2 and PH1-LD6b support

The DDR SDRAM initialization code has not been mainlined yet, but
U-Boot proper should work.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/sbc/Makefile b/arch/arm/mach-uniphier/sbc/Makefile
index 2c5fd1a..db622d2 100644
--- a/arch/arm/mach-uniphier/sbc/Makefile
+++ b/arch/arm/mach-uniphier/sbc/Makefile
@@ -3,3 +3,5 @@
 obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO4)	+= sbc-ph1-pro4.o
 obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8)	+= sbc-ph1-ld4.o
 obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO5)	+= sbc-ph1-pro4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PROXSTREAM2)	+= sbc-proxstream2.o
+obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD6B)	+= sbc-proxstream2.o