power: smb1351-charger: report icl status in parallel mode

Report the input current limited status via the power supply in parallel
mode in order to better optimize for HVDCP usecases.

CRs-Fixed: 930588
Change-Id: I9d802227ebd0289b796477020a51826717fc908f
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>