tuna: add support for battery LED charging

Device has multi-color RGB LED, enable charging function
using existing custom lights library and frameworks overlay

JIRA: CYAN-596
JIRA URL: https://jira.cyanogenmod.org/browse/CYAN-596

Change-Id: Iac3d9c36b96cda281ca94263305ae3ecc192f3e9
Adapt for API changes.

Adapt for changes made in http://review.cyanogenmod.org/#/c/51499/

Change-Id: I6fc84edd0e4bb6da0b2a9b2be738c44fe16f3929
Merge "Adapt for API changes." into cm-10.2
Merge remote-tracking branch 'cm/cm-10.2' into cm-10.2