power: qpnp-smbcharger: always set high current when setting ICL

Currently the charger driver does not override the APSD results. This
can cause issues when trying to set lower currents like 500/900mA when
the charger chip is in high current mode.

Fix this by always setting the high current register when overwriting
the ICL.

CRs-Fixed: 809138
Change-Id: Ic07b911bd1c35d072650bfc43bf57917be0a8758
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>