CHROMIUM: ARM: dts: tiger/fievel implement S3 LED blinking

On the current hardware, GPIO7_A3 controls with the LED with the
following behavior:
- GPIO7_A3 high: LED on.
- GPIO7_A3 low: LED off.
As Tiger/Fievel doesn't have an EC to do the LED blinking in S3,
an RC circuit will be added.
The new behavior with the RC will be the following :
- S0 set GPIO7_A3(low) -> LED on
- S3 set GPIO7_A3(high)-> LED blinking

BUG=chrome-os-partner:55306
TEST=power on fievel with rework RC circuit, LED blinking in S3.
BRANCH=None

Change-Id: I920e30cd247c917eb0d4550210b907d932fe0bc9
Signed-off-by: Pan Sheng-Liang <Sheng-Liang.Pan@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/365350
Commit-Ready: Ren Kuo <ren.kuo@quantatw.com>
Tested-by: Ren Kuo <ren.kuo@quantatw.com>
Reviewed-by: Ren Kuo <ren.kuo@quantatw.com>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2 files changed