arm64: dts: qcom: pm7250b: Add BAT_ID vadc channel

Add a node describing the ADC5_BAT_ID_100K_PU channel with the
properties taken from downstream kernel.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230106-pm7250b-bat_id-v1-2-82ca8f2db741@fairphone.com