Input: add OnKey driver for DA9063 MFD part

This adds OnKey driver support for DA9063.

Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --cc drivers/input/misc/Kconfig
Simple merge

diff --cc drivers/input/misc/Makefile
Simple merge

diff --cc drivers/input/misc/da9063_onkey.c
Simple merge

diff --cc include/linux/mfd/da9063/pdata.h
Simple merge