dt-bindings: arm: scu: Correct example SCU unit addresses

The unit addresses of the Cortex-A9 SCU device nodes contain too many
zeroes.  Remove them.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>