dt-bindings: thermal-zones: Don't require polling-delay(-passive)

Currently, thermal zones associated with providers that have interrupts
for signaling hot/critical trips are required to set a polling-delay
of 0 to indicate no polling. This feels a bit backwards.

Assume 0 (no polling) when these properties are not defined.

Signed-off-by: Konrad Dybcio <[email protected]>
Reviewed-by: Conor Dooley <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: konradybcio

Documentation/devicetree/bindings/thermal/thermal-zones.yaml

@@ -228,8 +228,6 @@ patternProperties:
             additionalProperties: false
 
     required:
-      - polling-delay
-      - polling-delay-passive
       - thermal-sensors
       - trips