power: smb5-lib: Add additional check to exit charge-termination WA

There is a possibility of the "real capacity" dropping post
termination due to a OCV update causing the charger-termination
WA to exit. Fix this by explicitly checking that we are not
in termination before exiting from the WA.

Change-Id: I5bf91367b633abf79cbc60ef5bdf93cca9559029
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>