ARM: dts: uniphier: sync DT with latest Linux

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/configs/uniphier_ld20_defconfig b/configs/uniphier_ld20_defconfig
index 3fe3758..3e802d3 100644
--- a/configs/uniphier_ld20_defconfig
+++ b/configs/uniphier_ld20_defconfig
@@ -5,7 +5,7 @@
 CONFIG_ARCH_UNIPHIER_LD20=y
 CONFIG_MICRO_SUPPORT_CARD=y
 CONFIG_SYS_TEXT_BASE=0x84000000
-CONFIG_DEFAULT_DEVICE_TREE="uniphier-ph1-ld20-ref"
+CONFIG_DEFAULT_DEVICE_TREE="uniphier-ld20-ref"
 CONFIG_SPL_NOR_SUPPORT=y
 CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_XIMG is not set