power: qpnp-smbcharger: fix suspend current misconfiguration

Commit 387cacdfdcfe0af00118ba6abeb0ae2ef88036a9 (power:
qpnp-smbcharger: always set high current when setting ICL)
tried fixing a problem where the APSD results couldn't be
overridden when setting lower currents like 500/900 mA.

However, it broke a special case handling the suspend current
configuration. Fix it.

CRs-Fixed: 844200
Change-Id: I02ff84d1e17ca6d714aed99c41c0399afefb71cc
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>