during system suspend in charge animation, we may need add
power manage control for some devices low power. Since U-Boot
don't provide standard suspend/resume callback for device. We
have to add rockchip_pm.c to write hard code to achieve this
for different platforms or boards.
Change-Id: I01f67c7c57cbcaae48d3def65eea8cab499af93b
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Joseph Chen