Created by: CJKay
Registers belonging to external nodes cannot be accessed if the power
domain that the node belongs to is not on. We therefore need to avoid
calling get_node_type() on external nodes, as doing so will fail.
Change-Id: Iac405c9f4c7095018cfec79185e6b84dece81e73 Signed-off-by: Chris Kay chris.kay@arm.com