morphius: add led behavior with force charging idle
morphius: add led behavior with force charging idle

This patch adds force charging idle led behavior for factory.

BUG=none
BRANCH=none
TEST=use ectool chargecontrol idle then make sure led blinking amber.

Change-Id: I096fbaf4260d170b3fd48cc6f433e5319584260d
Signed-off-by: Devin Lu <052fe648504800b810f29702ef4f3db83fad68bf@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2152038
Reviewed-by: Edward Hill <db1406b34e091703092b6b136bdfeb2c8125fc0e@chromium.org>
Reviewed-by: Denis Brockus <6b21e8190fb5e373363fb95271367073a16474ef@chromium.org>

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