* Added a kernel interface at `/proc/touchpanel/gesture_dt2w` for easier
interaction with power HAL.
* Add parameter to OSS power HAL to use this interface
* Added keycode for touchpanel to wake up the device
* TODO: Maybe add support for more touchscreen gestures?
* with a full vendor image, we can modify the sensors hal as we want. We
can replace the reported sensor type directly from HAL, instead of
relying on a framework patch.
* Somehow the OSS HAL always fails with timeout awaiting for driver
ready. The `wlan0` interface just does not show up with OSS HAL. For
now, let's just live with the stock ones..
LuK1337
Peter Cai