ARM: dts: uniphier: use macros in dt-bindings header

The dt-bindings header was applied to the driver subsystem.  I had to
wait for a merge window to use it from DT.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/boot/dts/uniphier-pro4-ref.dts

@@ -58,7 +58,7 @@
 &gpio {
 	xirq2 {
 		gpio-hog;
-		gpios = <122 0>;
+		gpios = <UNIPHIER_GPIO_IRQ(2) 0>;
 		input;
 	};
 };