LPM: Updates

-Enable Sweep2wake and 2tap2wake in LPM
-updates for date/time in charging mode
-In order to get the time zone right, we have to mount data so we
can read /data/property/persist.sys.timezone and we have to mount
/system so we can use /system/bin/setprop to set the property in
charging mode.
Thanks @Meticulus