Free allocated memory.  Call stmpe_disable() if it was enabled.
Signed-off-by: NVasiliy Kulikov <segooon@gmail.com>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Acked-by: NRabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>