vad: vad test tool code [1/2]

PD#SWPL-137956

Problem:
New feature, implement VAD and WWE feature run
on kernel code of ARM side.

Solution:
Implement vad driver and related code in
kernel, develop vad application to operate
vad device driver to sleep and wake up.

Verify:
A113L2 b400 board

Change-Id: Ied404f08c07518be8f25d2b6d64d8898ec49b141
Signed-off-by: cheng.wei <cheng.wei@amlogic.com>
12 files changed