ARM: dts: qcom: apq8060-dragonboard: use labels to patch device tree

Use labels to add device-specific properties to DT nodes rather than
duplicating SoC DT structure in the device DT.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220930185236.867655-22-dmitry.baryshkov@linaro.org