input: misc: add input driver for HBTP

This driver provides service to Host Based Touch Processing
in three aspects:
- It serves as an input device driver to send touch events from user
  space to the kernel input core.
- It monitors LCD on/off and sends uevent accordingly.
- It performs power management for the touch AFE (Analog Front End).

Change-Id: Ibfb7c6a8d2c895ea0a277b8f0bf810e0263260e6
Signed-off-by: Jing Lin <jinglin@codeaurora.org>
6 files changed