[RFC PATCH v2 10/16] mmc: omap_hsmmc: convert to dma_request_slave_channel_compat()

Convert dmaengine channel requests to use dma_request_slave_channel_compat(). This supports the DT case of platforms requiring channel selection from either the OMAP DMA or the EDMA engine. AM33xx only boots from DT and is the only user implementing EDMA so in the !DT case we can default to the

[RFC PATCH v2 10/16] mmc: omap_hsmmc: convert to dma_request_slave_channel_compat()

Convert dmaengine channel requests to use dma_request_slave_channel_compat(). This supports the DT case of platforms requiring channel selection from either the OMAP DMA or the EDMA engine. AM33xx only boots from DT and is the only user implementing EDMA so in the !DT case we can default to the