dt-bindings: clock: qcom,sm4450-dispcc: Reference qcom,gcc.yaml

Reference the common qcom,gcc.yaml schema to unify the common
parts of the binding.

Suggested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250717-gcc-ref-fixes-v2-4-a2a571d2be28@quicinc.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>