ARM: dts: qcom: msm8660: add pxo/cxo clocks to the GCC node

Add pxo/cxo clocks to the GCC device tree node.

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/20220909105136.3733919-5-dmitry.baryshkov@linaro.org