Added dynamic control over CS between SPI DMA transfers#26

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Blackaddr:dynamic_cs_control

Commits on Feb 11, 2018

Added dynamic control over CS between SPI DMA transfers
Steve Lascos
committed

Commits on Feb 19, 2018

Fixed an accidental incorrect definition of select() for T3.6
Steve Lascos
committed
Added DmaSpiGeneric class to obtain true abstraction
Steve Lascos
committed