tree 7804def80e9a22f1d5c759399b0f87b4244733a2
parent 14b1e6d63dcff248fff545bff17ce9f9fc7c66ec
author Mark Salyzyn <salyzyn@google.com> 1505921772 -0700
committer Mark Salyzyn <salyzyn@google.com> 1505932082 -0700

bootstat: validate last kmsg and bootreason content more carefully

Establish a tighter trust relationship with digitization of the
battery level.  Validate the reboot reason collected from the last
kmsg.  Validate the last reboot reason before using for enhancing
system reboot reason.

Test: system/core/bootstat/boot_reason_test.sh
Bug: 63636262
Change-Id: I45fbac4a33c09295cda89de3b73c93a884033e3b