power: qpnp-smb5: Do not use ibatt based termination for QG PMICs

On QG based targets, the charger makes the conversion request for
IBATT and determines when to terminate rather than sniffing the IBATT
as on PM8150B. Hence, enable this ibatt based charger termination
only for PM8150B(FG).

Change-Id: I294edce1b424e8175002d4924856461fb3ef0aab
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>