power: smb350-charger: release wake-lock when DC power jack removed

The smb350 holds a wake-lock while charging
and normally releases the wake-lock when charging is completed.
This fix releases the wake-lock when battery charging is disabled
due to DC power jack removal.

Change-Id: Ie811cdff00e1141e0b969283ebdcbf4f4af1dc48
Signed-off-by: Amir Samuelov <amirs@codeaurora.org>