ARM: dts: qcom-pm8941: add resin support

Wrap existing pwrkey and new resin nodes into the new pon node to enable
volume-down key support on platforms using pm8941 PMIC.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230609022553.1775844-4-dmitry.baryshkov@linaro.org


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