Disable beeps post reboots in crosperf.

Run gbb command before flashing to avoid post reboot beeps
if possible. It works only on machines with Write Protect Disabled.
Crosperf prints the erros messages and continues if this fails.

BUG=chromium:697609
TEST=Tested on kevin, daisy and jaq.

Change-Id: Ifb0c819281b3215655b7e3b02db605fa073d0e12
Reviewed-on: https://chromium-review.googlesource.com/508153
Commit-Ready: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Caroline Tice <cmtice@chromium.org>
1 file changed