To improve portability, testing coverage, and future platform enablement.
- Gate multicore on `MACHINE_FEATURES += "corstone1000_smp"`.
- Change recipe overrides from `:corstone1000-fvp` to `:corstone1000`.
- Update the Corstone-1000 multicore kas/doc references.
Signed-off-by: Alex Chapman <alex.chapman@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>