This conversion will allow to keep 32 bits addresses for the internal
registers whereas the memory of the system will be 64 bits.
Later it will also ease the move of the mvebu-mbus driver to the
device tree support.
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>