This adds documentation of device tree bindings for the STM32 IWDG
(Independent WatchDoG).
Signed-off-by: NYannick Fertre <yannick.fertre@st.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>