arm: dts: vexpress-v2p-ca9: Fix the SMB unit-address

Based on 'ranges', the 'bus@4000000' node unit-address is off by 1 '0'.

Link: https://lore.kernel.org/r/[e-mail]
Cc: Andre Przywara <[e-mail]>
Cc: Sudeep Holla <[e-mail]>
Cc: Linus Walleij <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Signed-off-by: Rob Herring <[e-mail]>
Signed-off-by: Sudeep Holla <[e-mail]>

arch/arm/boot/dts/vexpress-v2m.dtsi

···
  */
 
 / {
-	bus@4000000 {
+	bus@40000000 {
 		motherboard {
 			arm,hbi = <0x190>;
 			arm,vexpress,site = <0>;

arch/arm/boot/dts/vexpress-v2p-ca9.dts

···
 		};
 	};
 
-	smb: bus@4000000 {
+	smb: bus@40000000 {
 		compatible = "simple-bus";
 
 		#address-cells = <2>;