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/cmd_pinmon.c b/arch/arm/mach-uniphier/cmd_pinmon.c
index 58c53bf..b15ee9d 100644
--- a/arch/arm/mach-uniphier/cmd_pinmon.c
+++ b/arch/arm/mach-uniphier/cmd_pinmon.c
@@ -33,6 +33,13 @@
 		ph1_pro5_boot_mode_show();
 		break;
 #endif
+#if defined(CONFIG_ARCH_UNIPHIER_PROXSTREAM2) || \
+	defined(CONFIG_ARCH_UNIPHIER_PH1_LD6B)
+	case SOC_UNIPHIER_PROXSTREAM2:
+	case SOC_UNIPHIER_PH1_LD6B:
+		proxstream2_boot_mode_show();
+		break;
+#endif
 	default:
 		break;
 	}