ARM: dts: qcom-msm8660: add gpio-ranges to mpps nodes

Add gpio-ranges property to mpps device tree nodes, adding the mapping between
pinctrl and GPIO pins.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211008012524.481877-5-dmitry.baryshkov@linaro.org