Add support for DISPLAY PORT SINK module and associated configuration.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org
Link: https://lore.kernel.org/r/20230509112202.21471-3-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org