meta-quanta: gbs: fix only detect POST done state once

Fix the boot status LED behavior:

1. turn off boot status LED when system power off
2. keep monitoring POST done state GPIO to blink or turn
   on LED

Signed-off-by: George Hung <george.hung@quantatw.com>
Change-Id: Ibd4f639c1e0a9b879f59380b84da00ab92694e48
2 files changed