arm64: dts: uniphier: route on-board device IRQ to GPIO controller for PXs3

Commit 429f203e ("arm64: dts: uniphier: route on-board device IRQ
to GPIO controller") missed to update this DTS.  It becames a real
problem when arm and arm64 trees are merged together.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts

@@ -38,7 +38,8 @@ memory@80000000 {
 };
 
 &ethsc {
-	interrupts = <0 52 4>;
+	interrupt-parent = <&gpio>;
+	interrupts = <0 8>;
 };
 
 &serial0 {