regulator: dt-bindings: pca9450: Add nxp,pf9453 compatible string

Add the compatible string "nxp,pf9453" for the PF9453 regulator. The PF9453
is similar to the PCA9460 but supports only LDO1, LDO2, LDO_SVNS, and
BUCK[1-4].

Restrict LDO and BUCK numbers for nxp,pf9453 and keep the same restriction
for other compatible strings.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Frank Li <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml

···
   Datasheet is available at
   https://www.nxp.com/docs/en/data-sheet/PCA9450DS.pdf
 
+  Support PF9453, Datasheet is available at
+  https://www.nxp.com/docs/en/data-sheet/PF9453_SDS.pdf
+
 # The valid names for PCA9450 regulator nodes are:
 # BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6,
 # LDO1, LDO2, LDO3, LDO4, LDO5
···
       - nxp,pca9450c
       - nxp,pca9451a
       - nxp,pca9452
+      - nxp,pf9453
 
   reg:
     maxItems: 1
···
         unevaluatedProperties: false
 
     patternProperties:
-      "^LDO[1-4]$":
+      "^LDO([1-4]|-SNVS)$":
         type: object
         $ref: regulator.yaml#
         description:
···
   - regulators
 
 additionalProperties: false
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nxp,pf9453
+    then:
+      properties:
+        regulators:
+          patternProperties:
+            "^LDO[3-4]$": false
+            "^BUCK[5-6]$": false
+    else:
+      properties:
+        regulators:
+          properties:
+            LDO-SNVS: false
 
 examples:
   - |