power: smb5: Fix ICL for SDP with non-compliant cable

Currently, ICL for SDP is set 100mA if PMIC5 is connected with
a legacy non-compliant cable, while it is supposed to be 500mA
per PMIC5 spec.

Correct it.

CRs-Fixed: 2249471
Change-Id: Ib60c798a6122dad9016b788dc79969666ce44aca
Signed-off-by: Harry Yang <harryy@codeaurora.org>