bcl: Add Mitigation Logger - sepolicy

Mitigation Logger logs battery related information for 1 second when it
is triggered by under voltage or over current interrupts.  Information
collected is to help debug system brownout.

Bug: 228383769
Test: Boot and Test
Signed-off-by: George Lee <geolee@google.com>
Change-Id: I9ac873d03d57d9a6db8d9233f25c8fabdfc399a5
3 files changed