FORCE FAST CHARGE: v1.7 auto reload force on power plug/unplug.

*Some users report that they must disable and enable the
force fast charge to get high charge power. or they stuck at 300mA

For me all was OK as is. but i am nice dev, so here is auto reload
when Unplugged, force fast charge set to disabled.
and when plugged back to enabled, if was enabled.

From LOG:

PLUG PC USB:
<6>msm-dwc3 msm_dwc3: chg_type = USB_SDP_CHARGER
<6>dwc3 f9200000.dwc3: Avail curr from USB = 500
<6>dwc3 f9200000.dwc3: Power plugged, FFC is set to = 2
<6>smb349_input_current_limit_set: input current limit=1800 setting 09
<6>msm_otg_notify_power_supply: power_supply_get_by_name(usb)
<6>smb349_is_charger_present: DC is present. DC_IN volt:4841060

UNPLUG:
<3>android_work: sent uevent USB_STATE=DISCONNECTED
<6>dwc3 f9200000.dwc3: Avail curr from USB = 0
<6>dwc3 f9200000.dwc3: Power Unplugged, FFC is set to = 0
<3>smb349_is_charger_present: DC is missing.
<6>smb349_input_current_limit_set: input current limit=2000 setting 0a
<6>msm_otg_notify_power_supply: power_supply_get_by_name(usb)
<3>smb349_is_charger_present: DC is missing.