feat(plat): add platform API that gets cluster ID

This patch adds an API(plat_cluster_id_by_mpidr)
that retrieves the cluster ID by looking at
the MPIDR_EL1 for platforms that have ARM_PLAT_MT set

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I0266f2e49a3114d169a7708d7ddbd4f6229a7a41
2 files changed