TM2 touchkey support

modulename: tm2-touchkey.ko

configname: CONFIG_KEYBOARD_TM2_TOUCHKEY

Linux Kernel Configuration
└─>Device Drivers
└─>Input device support
└─>Keyboards
└─>TM2 touchkey support
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Say Y here to enable device driver for tm2-touchkey with
LED control for the Exynos5433 TM2 board.

To compile this driver as a module, choose M here.
module will be called tm2-touchkey.

source code: