add klteusc defconfig

Change-Id: I58c9d8baebd588a3cd3f5a22c93a3123fd5d365c
touchscreen: screen on and off hooks for capacitive buttons

* Seems these aren't being triggered to be shut off when proximity sensor
has turned off the screen. Lets make that happen

Change-Id: I4ee898b3ed51d36579e0834e79a99c1f6e5c1f04