qcom-charger: smblib: lower delay in OTG soft-start check

Currently, there is a delay of 20msec before raising OTG
current limit, which may be too long for some OTG devices and
cause unexpected issues.

Change it to 1ms or 2ms per HW timing.

Change-Id: Ie09a65e7974e2412af4add3b6f1e0aa20ee4a34b
Signed-off-by: Harry Yang <harryy@codeaurora.org>