ARM: dts: r8a7778: Enable IRLM setup via DT

Make use of the IRLM setup feature in the renesas-intc-irqpin driver.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Link: https://lore.kernel.org/r/1441726946-30131-3-git-send-email-ulrich.hecht+renesas@gmail.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/r8a7778.dtsi

@@ -78,7 +78,8 @@ irqpin: interrupt-controller@fe78001c {
 			<0xfe780010 4>,
 			<0xfe780024 4>,
 			<0xfe780044 4>,
-			<0xfe780064 4>;
+			<0xfe780064 4>,
+			<0xfe780000 4>;
 		interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,