dt-bindings: pwm: Avoid selecting schema on node name match

Currently any node whose name starts with the "pwm-" prefix will match
this schema and in turn required the "#pwm-cells" property. Avoid this
by marking the schema with select: false, therefore only activating the
schema when directly included from a PWM controller schema file.

Signed-off-by: Thierry Reding <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Author: thierryreding

Documentation/devicetree/bindings/pwm/pwm.yaml

@@ -9,6 +9,8 @@ title: PWM controllers (providers)
 maintainers:
   - Thierry Reding <[email protected]>
 
+select: false
+
 properties:
   $nodename:
     pattern: "^pwm(@.*|-[0-9a-f])*$"