clk: zynqmp: Use firmware APIs in clock driver

clk: zynqmp: Use firmware APIs in clock driver

In existing driver, clocks are registered statically.
Instead of using static clocks, get clock information
from firmware and register clocks accordinglly.

Firmware maintains database of all clocks avaiable for the
variant. So if there is any new clocks are avaiable for
specific variant or some clocks are not present in
variant, Linux driver would not need any change.

To contorl the clocks, use firmware APIs instead of
register read/write. This prevents direct clock control
from any single master(processor) shared between multiple
masters. Firmware can implement this APIs to manage
shared clocks.

Change clock IDs in dts based on new firmware IDs.

Signed-off-by: Tejas Patel <tejasp@xilinx.com>
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>