arm64: dts: uniphier: correct on-board device IRQ number for PXs3

Commit ba5b5034 ("arm64: dts: uniphier: route on-board device IRQ
to GPIO controller for PXs3") has incorrect update.

Fixes: ba5b5034 ("arm64: dts: uniphier: route on-board device IRQ to GPIO controller for PXs3")
Signed-off-by: Dai Okamura <okamura.dai@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

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

@@ -39,7 +39,7 @@ memory@80000000 {
 
 &ethsc {
 	interrupt-parent = <&gpio>;
-	interrupts = <0 8>;
+	interrupts = <4 8>;
 };
 
 &serial0 {