This patch adds clock driver support for Versal platform. The clock driver
queries and performs clock operations using PLM firmware by communicating
with it using SMC calls.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>