Set up update_verifier logging to be written to kmsg; because we may not have Logd during boot time. Bug: 64713327 Test: logs show up in `adb shell dmesg` Change-Id: If02f460bda121cd3e9062bc0e08107c6da66492c
Enable -Wall and expose verify_image() for testing purpose. Test: mmma bootable/recovery Test: recovery_component_test Change-Id: I1ee1db2a775bafdc1112e25a1bc7194d8d6aee4f