power: qpnp-fg: read rslow configuration during hw_init

Currently, rslow compensation active settings are applied and
cleared based on certain conditions. However, if the device goes
for a reset, the flag used by FG driver to save the setting done
will vanish. For e.g. if an active setting is applied and the
device goes for a reset, even if there is a condition present to
clear the active setting, it will not be applied. This is due to
the fact that the flag (rslow_comp.active) is not set in first
place even though FG HW has that setting applied. Fix this by
reading rslow configuration during hw_init and set the flag.

CRs-Fixed: 977626
Change-Id: Ib6d9f7d79335b027f7ed7ee24dfd5c9bb303228d
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>