regulator: Document PM2250 smd-rpm regulators

Document compatible for PM2250 smd-rpm regulators and list all of them.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://lore.kernel.org/r/20210926084549.29880-2-shawn.guo@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.yaml

@@ -65,6 +65,9 @@ description:
   For pms405, s1, s2, s3, s4, s5, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11,
   l12, l13
 
+  For pm2250, s1, s2, s3, s4, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11,
+  l12, l13, l14, l15, l16, l17, l18, l19, l20, l21, l22
+
 maintainers:
   - Kathiravan T <kathirav@codeaurora.org>
 
@@ -86,6 +89,7 @@ properties:
       - qcom,rpm-pmi8994-regulators
       - qcom,rpm-pmi8998-regulators
       - qcom,rpm-pms405-regulators
+      - qcom,rpm-pm2250-regulators
 
 patternProperties:
   ".*-supply$":