staging:iio:accel:sca3000: allocate state in iio_dev and use iio_priv to access.

Mechanical change.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/iio/accel/sca3000.h
Simple merge

diff --cc drivers/staging/iio/accel/sca3000_core.c
Simple merge

diff --cc drivers/staging/iio/accel/sca3000_ring.c
Simple merge