ARM: dts: uniphier: add syscon-phy-mode property to each ethernet node

Add syscon-phy-mode property specifying a phandle of system controller
to each ethernet node.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-ld20.dtsi b/arch/arm/dts/uniphier-ld20.dtsi
index b993df8..b25232d 100644
--- a/arch/arm/dts/uniphier-ld20.dtsi
+++ b/arch/arm/dts/uniphier-ld20.dtsi
@@ -626,6 +626,7 @@
 			resets = <&sys_rst 6>;
 			phy-mode = "rgmii";
 			local-mac-address = [00 00 00 00 00 00];
+			socionext,syscon-phy-mode = <&soc_glue 0>;
 
 			mdio: mdio {
 				#address-cells = <1>;