ARM: uniphier: sync with Linux 5.8-rc4

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-pro4-ref.dts b/arch/arm/dts/uniphier-pro4-ref.dts
index 06065eb..4967db5 100644
--- a/arch/arm/dts/uniphier-pro4-ref.dts
+++ b/arch/arm/dts/uniphier-pro4-ref.dts
@@ -30,6 +30,7 @@
 		i2c5 = &i2c5;
 		i2c6 = &i2c6;
 		usb0 = &usb0;
+		ethernet0 = &eth;
 	};
 
 	memory@80000000 {