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/boot-mode/Makefile b/arch/arm/mach-uniphier/boot-mode/Makefile
index 1d2f8b3..30c8874 100644
--- a/arch/arm/mach-uniphier/boot-mode/Makefile
+++ b/arch/arm/mach-uniphier/boot-mode/Makefile
@@ -5,3 +5,5 @@
 obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO4)	+= boot-mode-ph1-ld4.o
 obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8)	+= boot-mode-ph1-ld4.o
 obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO5)	+= boot-mode-ph1-pro5.o
+obj-$(CONFIG_ARCH_UNIPHIER_PROXSTREAM2)	+= boot-mode-proxstream2.o
+obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD6B)	+= boot-mode-proxstream2.o