vendor.brownout_reason did not get triggered as battery_mitigation.rc looked for reboot,ocp,buck3m and not reboot,ocp,BUCK3M. Bug: 268700448 Test: Confirm triggering of bugreport Change-Id: Icf7dd70d1bd050616583af807fc16e8f7680f95d Signed-off-by: George Lee <geolee@google.com>