power: qpnp-smbcharger: expose CHARGE_COUNTER/CYCLE_COUNT props

CHARGE_COUNTER and CYCLE_COUNT are required battery power supply
properties. Expose them via "battery" power_supply class.

Change-Id: Idf17f3dd5e0ce8634055de09071ba5b0d0b59611
Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>