arm64: dts: qcom: Add PMI632 PMIC

The PMI632, commonly found on SoCs with SDM632 has various standard
functions like ADC, GPIOs, LPG and more.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230414-pmi632-v3-1-079d2cada699@z3ntu.xyz