regulator: Add property for WDOG_B warm reset

Make it possible to do warm reset on WDOG_B assertion.

Signed-off-by: Rickard x Andersson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

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

···
     description:
       Indicates that the I2C Level Translator is used.
 
+  nxp,wdog_b-warm-reset:
+    type: boolean
+    description:
+      When WDOG_B signal is asserted a warm reset will be done instead of cold
+      reset.
+
 required:
   - compatible
   - reg