dt-bindings: clocks: qcom,mmcc: define clocks/clock-names for MSM8974

Define clock/clock-names properties of the MMCC device node to be used
on MSM8974 platform.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221204124508.1415713-3-dmitry.baryshkov@linaro.org