run dmesg with adb root

- some device requires root to access kernel dmesg

bug: 33210752
Test: manual script run, python packages/services/Car/tools/bootanalyze/bootanalyze.py -r -c packages/services/Car/tools/bootanalyze/config.yaml -n 2
Change-Id: I7c428471e1b0e571665ce225b92310bbce6ee797
1 file changed