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/20210819184239.1192395-5-robh@kernel.org


Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>