Merge changes from topic "us_pmu" into integration

* changes:
  fix(tc): correct CPU PMU binding
  feat(tc): add device tree binding for SPE
  feat(tc): add PPI partitions in DT binding
  feat(tc): change GIC DT property 'interrupt-cells' to 4
  feat(tc): add NI-Tower PMU node for TC3
  feat(tc): setup ni-tower non-secure access for TC3