Four different drivers define the "default-state" property.
Move this into the common.txt common LEDs properties.

Cc: devicetree@vger.kernel.org
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJacek Anaszewski <j.anaszewski@samsung.com>