yorp: implement late hibernate call
yorp: implement late hibernate call

Implement board_hibernate_late function
to turn off the LED's.

BUG=b:110057984
BRANCH=NONE
TEST=On Yorp board, enter hibernate mode through
key combination "Alt H Vol Up" , observe that LED is
turned off.

Change-Id: Idb412cbbbb549c54b449cd4571226e284dd88e6a
Signed-off-by: Jagadish Krishnamoorthy <dc5f01fee5a925b1884aa0fe53687fdf8ecdfb09@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/1096665
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>
Reviewed-by: Vijay Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.corp-partner.google.com>

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