3rd set of IIO fixes for the 6.1 cycle.

Usual mixed bunch of driver fixes.

* sw-triggers
  - Fix failure to cleanup up list registration in an error path.
* aspeed,adc
  - Drop the trim valid dts property as it doesn't account for unprogrammed
    OTP and that can be easily detected without it.
* avago,apds9960:
  - Fix register address for gesture gain.
* bosch,bma400
  - Fix a memory leak in an error path.
* rohm,rpr0521
  - Fix missing dependency on IIO_BUFFER/IIO_TRIGGERED_BUFFER.
* ti,afe4403/4404
  - Fix out of band read by moving reads down to where they are used.
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