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Add fwnode support to the lm3630a driver and optionally allow configuring the label, default brightness level, and maximum brightness level. The two outputs can be controlled by bank A and B independently or bank A can control both outputs. If the platform data was not configured, then the driver defaults to enabling both banks. This patch changes the default value to disable both banks before parsing the firmware node so that just a single bank can be enabled if desired. There are no in-tree users of this driver. Driver was tested on a LG Nexus 5 (hammerhead) phone. Signed-off-by: Brian Masney <[email protected]> Reviewed-by: Dan Murphy <[email protected]> Acked-by: Daniel Thompson <[email protected]> Acked-by: Pavel Machek <[email protected]> Signed-off-by: Lee Jones <[email protected]>