If initialization data is available and its fwnode is actually a
of_node, store this information in the led device's structure. This
will allow the device to use or provide OF-based API such (devm_xxx).
Signed-off-by: NJean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: NPavel Machek <pavel@ucw.cz>