arm64: dts: qcom: sm8450: Add description of camera control interfaces

Add description of two CCI controllers found on QCOM SM8450.

Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220901073504.3077363-1-vladimir.zapolskiy@linaro.org