power: cpcap: battery: Adapt Quarx's modifications to new version of cpcap-battery.

This is a try to get rid of battd usage in kexec roms. In Quarx's original mod driver AC charging wasn't working (as it's mostly controlled by battd, according to dmesg).
In our newer cpcap battery version Motorola added a cpcap-charger driver which we will try to use.