clk: samsung: gs101: add support for Display Process Unit (DPU) clocks

clk: samsung: gs101: add support for Display Process Unit (DPU) clocks

cmu_dpu is the clock management unit used for the Display Process Unit
block. It generates clocks for image scaler, compressor etc.

Add support for the muxes, dividers and gates in cmu_dpu.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: André Draszik <andre.draszik@linaro.org>
Link: https://patch.msgid.link/20260113-dpu-clocks-v3-4-cb85424f2c72@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>