staging:iio:adc: AD7606: Drop dev_data in favour of iio_priv()

Some other small cleanups including excess header removals.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
3 files changed