keypad: move keypad.h to drivers_aocpu repository [1/1]

PD#SWPL-148818

Problem:
As the driver header file, keypad.h should be moved
from the boards repository to the drivers_aocpu repository
to facilitate subsequent maintenance.

Solution:
Move it.

Verify:
S5/AX208

Change-Id: I379f5ee453313c9f76a320754e0028d205033ccb
Signed-off-by: Huqiang Qin <huqiang.qin@amlogic.com>
25 files changed