dt-binding: cpu-topology: Move cpu-map to a common binding.

cpu-map binding can be used to described cpu topology for both
RISC-V & ARM. It makes more sense to move the binding to document
to a common place.

The relevant discussion can be found here.
https://lkml.org/lkml/2018/11/6/19

Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Sudeep Holla <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Paul Walmsley <[email protected]>
1 file changed