sensorhub: stm: add wakelock timeout controls

Combined sysfs control for:

  sig_motion_sensor
  pickup_gesture
  tilt_detector
  proximity_sensor

Individual sysfs controls for:

  ssp_sensorhub
  grip_sensor

Decreased ssp_sensorhub wake time to save a little battery

Signed-off-by: UpInTheAir <upintheair.xda@gmail.com>

Used commit: https://github.com/exynos7420/android_kernel_samsung_exynos7420/commit/3f9f3f6c7b9e87f2682a7f28cebb2d58f72cbe53