dt-bindings: clock: meson: add A1 Peripherals clock controller bindings

Add documentation and dt bindings for the Amlogic A1 Peripherals clock
controller.
A1 PLL clock controller has references to A1 Peripherals clock
controller objects, so reflect them in the schema.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230523135351.19133-6-ddrokosov@sberdevices.ru


Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>