dmaengine: at_xdmac: use __maybe_unused for pm functions
Use __maybe_unused for pm functions. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211007111230.2331837-4-claudiu.beznea@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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