ARM: dts: bcm6846: Add interrupt to RNG

The r200 RNG has an interrupt so let's add it.

Signed-off-by: Linus Walleij <[e-mail]>
Reviewed-by: William Zhang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Florian Fainelli <[e-mail]>

arch/arm/boot/dts/broadcom/bcm6846.dtsi

···
 		rng@b80 {
 			compatible = "brcm,iproc-rng200";
 			reg = <0xb80 0x28>;
+			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
 		leds: led-controller@800 {