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Actions may need to be taken by the last core when all clusters
have been shutdown. Add a top level root domain node to coordinate
this between clusters.
Signed-off-by: Andrew F. Davis <afd@ti.com>

These functions describe the layout of the cores and clusters in order to
support the PSCI framework.
Signed-off-by: Benjamin Fair <b-fair@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>