board: 8930: update touch config data version to 15.2.0

Update version to trigger update of configuration data on
8930 devices.  Some were released with incorrect x/y range,
which causes touch to be unresponsive.  New .cfg file also
being released to reflect these changes.

Change-Id: I6bdaf137c2dcab38b1a8e868a7b992e36b3c6219
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>