soc: qcom: socinfo: add info from PMIC models array

Add debugfs file showing information from PMIC model array.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20201222130448.4125297-3-dmitry.baryshkov@linaro.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>