clk: amlogic: introduce a common pclk definition

All Amlogic peripheral clocks are more or less the same. The only thing
that differs is the parent data.

Adapt the common pclk definition so it takes clk_parent_data and can be
used by all controllers.

Reviewed-by: Chuan Liu <chuan.liu@amlogic.com>
Link: https://lore.kernel.org/r/20250825-meson-clk-cleanup-24-v2-8-0f402f01e117@baylibre.com


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