ARM: dts: vf: Fix warning about missing reg property

Add proper reg values for the two AIPS bus nodes. This avoids this
two warnings:
Node /soc/aips-bus@40000000 has a unit name, but no reg property
Node /soc/aips-bus@40080000 has a unit name, but no reg property

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

arch/arm/dts/vf.dtsi

@@ -35,6 +35,7 @@
 			compatible = "fsl,aips-bus", "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
+			reg = <0x40000000 0x00070000>;
 			ranges;
 
 			uart0: serial@40027000 {
@@ -130,6 +131,7 @@
 			compatible = "fsl,aips-bus", "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
+			reg = <0x40080000 0x0007f000>;
 			ranges;
 
 			uart4: serial@400a9000 {