ARM: ux500: get SCU base from device tree
ARM: ux500: get SCU base from device tree

The SMP startup/shutdown code relied on a static SCU base
address, let's get this from the device tree instead.

Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs