dt-bindings: iio: adc: Remove the property "aspeed,trim-data-valid"

If the property is set on a device without valid trimming data in the OTP
the ADC will not function correctly. Therefore, this patch drops the use
of this property to avoid this scenario.

Fixes: 2bdb2f0 ("dt-bindings: iio: adc: Add ast2600-adc bindings")
Signed-off-by: Billy Tsai <[email protected]>
Acked-by: Rob Herring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Cc: <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>

Author: billy-tsai

Documentation/devicetree/bindings/iio/adc/aspeed,ast2600-adc.yaml

@@ -62,13 +62,6 @@ properties:
     description:
       Inform the driver that last channel will be used to sensor battery.
 
-  aspeed,trim-data-valid:
-    type: boolean
-    description: |
-      The ADC reference voltage can be calibrated to obtain the trimming
-      data which will be stored in otp. This property informs the driver that
-      the data store in the otp is valid.
-
 required:
   - compatible
   - reg