regulator: qcom_smd: Add PM2250 regulators

PM2250 is commonly used with QCM2290/QCS2290 SoCs, and provides 4 SMPS
and 22 LDO regulators.  The LDO regulators are the same types found on
PM660.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://lore.kernel.org/r/20210926084549.29880-3-shawn.guo@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>