[PATCH 7/8] dmaengine: bcm2835: add slave_sg support to bcm2835-dma

From: Martin Sperl Add slave_sg support to bcm2835-dma using shared allocation code for bcm2835_desc and DMA-control blocks already used by dma_cyclic. Note that bcm2835_dma_callback had to get modified to support both modes of operation (cyclic and non-cyclic). Tested

[PATCH 7/8] dmaengine: bcm2835: add slave_sg support to bcm2835-dma

From: Martin Sperl Add slave_sg support to bcm2835-dma using shared allocation code for bcm2835_desc and DMA-control blocks already used by dma_cyclic. Note that bcm2835_dma_callback had to get modified to support both modes of operation (cyclic and non-cyclic). Tested using: * Hifiberry I2S