power: qcom: step-chg-jeita: Add support to read properties from bms

Currently, step charging and SW JEITA algorithms always read the
properties from battery power supply to determine moving across
ranges. Add a parameter "use_bms" to read the properties from
bms power supply.

Change-Id: I2a086a16282039866f31d06dbfed06e76316a054
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>