The WM8741 DAC supports several differential output modes (stereo,
stereo reversed, mono left, mono right). Add platform data and DT
bindings to configure it.
Signed-off-by: NSergej Sawazki <ce3a@gmx.de>
Acked-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@kernel.org>