feat(tc): add PPI partitions in DT binding

Define ppi-partitions for little, middle, and big cpu groups. PPI
affinity is expressed as a single "ppi-partitions" node, containing a
set of sub-nodes for each microarchitecture type, each with the
property 'affinity' which should be a list of phandles to CPU nodes.

PPI paritions are useful to affine specific PPI with set of CPUs
so that the drivers of micro-architecture specific nodes which uses
PPI can be divided based on CPU list e.g. SPE-PMU, CPU-PMU etc.

Change-Id: If7d47f71387ac982d2d992a0ce2de1652d564bd6
Signed-off-by: Jagdish Gediya <jagdish.gediya@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
2 files changed