Merge changes from topic "zynqmp-update-pinctrl-api" into integration

* changes:
  zynqmp: pm: Reimplement pinctrl get/set config parameter EEMI API calls
  zynqmp: pm: Reimplement pinctrl set/get function EEMI API
  zynqmp: pm: Implement pinctrl request/release EEMI API
  zynqmp: pm: Update return type in query functions