ARM: dts: uniphier: resync DT with Linux 5.9-rc1

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-ld20-ref.dts b/arch/arm/dts/uniphier-ld20-ref.dts
index eeb976e..39ee279 100644
--- a/arch/arm/dts/uniphier-ld20-ref.dts
+++ b/arch/arm/dts/uniphier-ld20-ref.dts
@@ -20,7 +20,7 @@
 
 	aliases {
 		serial0 = &serial0;
-		serial1 = &serial1;
+		serial1 = &serialsc;
 		serial2 = &serial2;
 		serial3 = &serial3;
 		i2c0 = &i2c0;
@@ -42,6 +42,10 @@
 	interrupts = <0 8>;
 };
 
+&serialsc {
+	interrupts = <0 8>;
+};
+
 &serial0 {
 	status = "okay";
 };
@@ -64,7 +68,7 @@
 };
 
 &mdio {
-	ethphy: ethphy@0 {
+	ethphy: ethernet-phy@0 {
 		reg = <0>;
 	};
 };