power: qpnp-smbcharger: expose CHARGE_COUNTER prop via batt psy

CHARGE_COUNTER is a required battery power supply property. Add it.

CRs-Fixed: 2068899
Change-Id: I44b9eef443e2a018b5d862a1cd79c7bd65839b30
Signed-off-by: Ankit Sharma <ansharma@codeaurora.org>