power: supply: qti_battery_charger: Allow ICL to be set only for SDP

Input Current Limit (ICL) needs to be set only for SDP and not
for other charger types. Add that logic.

Change-Id: Ib48acf5666ea4190b7a11c27ab9cefbb534632fb
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>