dt-bindings: clock: qcom,gcc-apq8084: define clocks/clock-names

Define clock/clock-names properties of the GCC device node to be used
on APQ8084 platform.

Note: the driver uses a single pcie_pipe clock, however most probably
there are two pipe clocks, one from each of PCIe QMP PHYs.

Acked-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/20230111060402.1168726-2-dmitry.baryshkov@linaro.org