zynqmp: pm: Cleanup for clock set/get rate EEMI API

Clock set/get rate are not implemented and will likely never be.
Remove empty function stubs.

Signed-off-by: Mirela Simonovic <mirela.simonovic@aggios.com>
Acked-by: Will Wong <WILLW@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
3 files changed