Merge changes from topic "us_mhuv3" into integration

* changes:
  feat(tc): add MHUv3 addresses between RSS and AP
  feat(tc): specify MHU version based on platform
  feat(tc): bind SCMI over MHUv3 for TC3
  feat(tc): add MHUv3 DT binding for TC3
  feat(tc): add MHUv3 doorbell support on TC3
  refactor(tc): change tc_scmi_plat_info to single structure