Focaltech's CTP FT6436 is able to behave like a proximity sensor.
Enable the driver support this new feature.
Also cleared the chekpatch warning on 3.18 kernel.
Change-Id: I7a6ec3a387536c512637b0bd8dab95e7cceca212
Signed-off-by: Mao Li <maol@codeaurora.org>
Signed-off-by: Sudhakar Manapati <smanap@codeaurora.org>
Signed-off-by: Abinaya P <abinayap@codeaurora.org>