input: sensors: add AP3426 ALPS sensor Makefile and Kconfig

AP3426 is an ambient light and proximity sensor from dyna image.
It can measure light intensity and object distance. Add Makefile
and Kconfig to enable AP3426 driver.

Change-Id: Ia9ba2ed604de6b2768f5256e13ab84e95c915f7b
Signed-off-by: Oliver Wang <mengmeng@codeaurora.org>