The "has_dma_support" needed for future use with dmaengine driver.

[Fixed some unneded ternery operators -- broonie]
Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>