dt-bindings: hwmon: adt7475: Deprecate adi,pwm-active-state

Now that we have fan child nodes that can specify flags for the PWM
outputs we no longer need the adi,pwm-active-state property.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240722221737.3407958-3-chris.packham@alliedtelesis.co.nz


Signed-off-by: Guenter Roeck <linux@roeck-us.net>