ARM: shmobile: r8a7779 dtsi: Use generic names for device nodes

irqpin -> interrupt-controller
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7779.dtsi

@@ -148,7 +148,7 @@ gpio6: gpio@ffc46000 {
 		interrupt-controller;
 	};
 
-	irqpin0: irqpin@fe780010 {
+	irqpin0: interrupt-controller@fe780010 {
 		compatible = "renesas,intc-irqpin-r8a7779", "renesas,intc-irqpin";
 		#interrupt-cells = <2>;
 		status = "disabled";