remove dma_supported and pci_dma_supported as public APIs
From: Christoph Hellwig <hch@lst.de>
Date: 2015-10-03 15:23:46
Also in:
dri-devel, linux-media, lkml, netdev
All driver should be using dma_set_mask / pci_set_dma_mask to try to set the dma mask instead of just querying it. Without that some iommu implementations may not work. pci_dma_supported is removed entirely, but dma_supported stays for dma_ops implementations for now.