power: supply: smb5: Configure charger termination condition

Configure charger termination based on the number of the disqualified
IBAT samples. If there are less than MAX_FAILED_IBATT_SAMPLE_FOR_TERM
disqualified IBAT samples within one IBAT conversion cycle, then
charging is terminated.

Change-Id: I7a8104e84a241f6549d599edbd379b03e470c6d2
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>