arm64: dts: qcom: sm8550: add description of CCI controllers

arm64: dts: qcom: sm8550: add description of CCI controllers

Qualcomm SM8550 SoC contains 3 Camera Control Interface controllers
very similar to the ones found on other Qualcomm SoCs.

One noticeable difference is that cci@ac16000 controller provides only
one I2C bus and has an additional control over AON CCI pins gpio208
and gpio209, but this feature is not yet supported in the CCI driver.

Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Link: https://lore.kernel.org/r/20240612215835.1149199-4-vladimir.zapolskiy@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>