qcom: step-chg-jeita: Add support for jeita fcc scaling

The current design of sw-jeita handling requires some predefined
steps to be added for jeita step charge, These steps need to be
tuned and updated appropriately on every platform to get the best
charge time. Add support for auto jeita fcc scaling which
when enabled auto-scales the FCC depending upon the granularity
of increase in battery temperature.

Change-Id: Ida1c9b62f1a94e32de5e74ecb75c5c0b5d47548d
Signed-off-by: Ashish Chavan <ashichav@codeaurora.org>