ARM: dts: uniphier: add device tree for Micro Support Card

Import uniphier-support-card.dtsi from Linux Kernel and make it
available on the UniPhier reference boards.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-ph1-ld4-ref.dts b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
index d7b0007..6cae452 100644
--- a/arch/arm/dts/uniphier-ph1-ld4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
@@ -9,6 +9,7 @@
 /dts-v1/;
 /include/ "uniphier-ph1-ld4.dtsi"
 /include/ "uniphier-ref-daughter.dtsi"
+/include/ "uniphier-support-card.dtsi"
 
 / {
 	model = "UniPhier PH1-LD4 Reference Board";
@@ -35,6 +36,10 @@
 	};
 };
 
+&ethsc {
+	interrupts = <0 49 4>;
+};
+
 &serial0 {
 	status = "okay";
 };