smb-lib: add support of ICL voting based on charger

Add support to vote for ICL based on charger type.
Following are the current limit for chargers:
Legacy adapters:
CDP: 1500mA, DCP: 1800mA, HVDCP: 3000mA

TypeC Adapters:
Based on the current advertised by the adapter.

Change-Id: Ia5dbf73c29949a94e096ca6233a33c40da744140
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>