Add enum for new battery relative functions in android S

Reference the table from PM requested:
https://docs.google.com/spreadsheets/d/1TC_6MLVMvOS0p1ic0wPfQ-19AOuY8Kc8FUJdqaQSM4I/edit?ts=6098b296#gid=0

Bug: 188505537
Test: builds
Change-Id: I70744917fc7f2603450f111d8db0cb47a3c1d207
Merged-In: I70744917fc7f2603450f111d8db0cb47a3c1d207
1 file changed
tree: df0076e0568f2de5e915105e2c1afda223635d5a
  1. stats/
  2. OWNERS