DT: binding: bcm2835-mbox: fix address typo in example

The address of the mailbox node in the example has a typo.
So fix it accordingly.

Signed-off-by: Stefan Wahren <[e-mail]>
Fixes: d4b5c782b9f4 ("dt/bindings: Add binding for the BCM2835 mailbox driver")
Acked-by: Rob Herring <[e-mail]>
Reviewed-by: Andreas Färber <[e-mail]>
Signed-off-by: Eric Anholt <[e-mail]>

Documentation/devicetree/bindings/mailbox/brcm,bcm2835-mbox.txt

···
 
 Example:
 
-mailbox: mailbox@7e00b800 {
+mailbox: mailbox@7e00b880 {
 	compatible = "brcm,bcm2835-mbox";
 	reg = <0x7e00b880 0x40>;
 	interrupts = <0 1>;