[PATCH]input: Add support for Kionix KXTJ9 accelerometer

This patch adds support for the Kionix KXTJ9 digital tri-axis accelerometer.  
The driver uses i2c for hardware communication, input for passing data to the 
application layer, and sysfs to handle system calls.  There were a few warnings 
when I ran checkpatch.pl, all concerning the use of kstrto* in preference to 
simple_strtoul but am concerned that this change may affect backwards 
compatibility.  Please let me know if I need to change anything in order to get 
this merged.