iio: accel: kxcjk-1013: add support for kxcj9-1008

This patch adds support for KXCJ9-1008 3-axis acceleromenter sensor.
KXCJ9-1008 uses the same register definitions as KXCJK-1013.

The specification for KXCJ9-1008 can be downloaded from:
http://www.kionix.com/sites/default/files/KXCJ9-1008%20Specifications%20Rev%205.pdf



Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>