The power off sequence is behind of i2c bus shutdown func,
it would prevent the rk818 to do power off action. The irq was
disabled when rk818 power off, it could let rk818 to power off
through i2c bus.
Change-Id: Ia6155f137ab2fa36dbe19e06878b0228670b1398
Signed-off-by: Firefly <service@t-firefly.com>
(cherry picked from commit 67e6de73b6b9336ef515c4d5a075251fb94ff6dc)
937e123f6c