regulator: rpi-panel: Register with a unique backlight name
There's no reason why 2 Raspberry Pi DSI displays can't be
attached to a Pi Compute Module, so the backlight names need to
be unique.
Use the parent dev_name. It's not as readable, but is unique.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
parent
ba209048
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