Merge tag 'iio-fixes-3.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23...

Jonathan writes:

First round of IIO fixes for the 3.17 cycle.

* Fix an overwritten error return that can prevent deferred probing when
  using of_iio_channel_get_by_name
* A series that deals with an incorrect reference count when the default
  trigger is set within the main probe routine for a driver.  Can result
  in a double free if the trigger is changed.
* Fix a buglet with xilinx-xadc concerning setup of the address for an
  aux channel.
* At91 adc driver could sometimes get a touchscreen reading rather than
  the intended adc channel.  This is fixed by using the channel data register
  instead.
* Fix some ST magnetometer gain values that differ in production parts from
  the prerelease ones used for driver development.