i2c_slave: add driver for rtc wake up [3/3]

PD#SWPL-116360

Problem:
need check rtc wake up

Solution:
add i2c slave driver

Verify:
a4 ba409

Signed-off-by: junyi.zhao <junyi.zhao@amlogic.com>
Change-Id: I934c34d33ad7b4205877326dd8cea98d1e8d3c58
4 files changed