bobba: Modify the LED behavior to meet the spec.
bobba: Modify the LED behavior to meet the spec.

Battery Error: Amber on 1 sec off 1 sec
Discharge in S3: Amber on 1 sec off 3 sec

BUG=b:111775507
BRANCH=master
TEST=check the LED is amber on 1sec off 1sec while only plugging in AC
adpater PASS

Change-Id: I359cb8d5e4981d3dc5f509c701c5a67bc7371bf8
Signed-off-by: Sue Chen <7d23cdcf270f71747b77aeecc793a9342f6d5c9e@quanta.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1164158
Commit-Ready: Ryan Zhang <e315b7dc13b7527284474a225c1e9840f1ef4413@quanta.corp-partner.google.com>
Tested-by: Ryan Zhang <e315b7dc13b7527284474a225c1e9840f1ef4413@quanta.corp-partner.google.com>
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec