lenovo/x230: Enable wake on LID and Fn key.

Change-Id: Ifc7208400b0bdfa2b9b70773bd24e9f9df7f8048
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6526
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>