drivers: pinctrl: Update ZynqMP pin control driver

drivers: pinctrl: Update ZynqMP pin control driver

Replace existng pin control driver with a new version
of ZyqnMP pin control driver. This driver queries pin
information from firmware and registers pin control
accordingly instead of using hard coded pin info.

New pin control driver creates group name from function name
by adding postfix so some group names are different than existing
group names. Deprecate old pin control driver and its DT bindings
and use new pin control DT binding in device tree.

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