arm64: dts: juno: Add external expansion bus to DT

The Juno development platform has an external expansion bus which can
be used for additional hardware (e.g. LogicTile Express daughterboards).

Add this bus to the Juno base device-tree.
Acked-by: NLiviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: NBrian Starkey <brian.starkey@arm.com>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>

arch/arm64/boot/dts/arm/juno-base.dtsi

@@ -272,3 +272,13 @@
 
 		/include/ "juno-motherboard.dtsi"
 	};
+
+	site2: tlx@60000000 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0 0x60000000 0x10000000>;
+		#interrupt-cells = <1>;
+		interrupt-map-mask = <0 0>;
+		interrupt-map = <0 0 &gic 0 0 0 168 IRQ_TYPE_LEVEL_HIGH>;
+	};