Hi all, this is the next attempt to not return memory that is not DMA coherent on coldfire/m68knommu. The last one needed more fixups in the fec driver, which this versions includes. On top of that I've also added a few more cleanups to the core DMA allocation code. Jim: any work to support the set_uncached and remap method for arm32 should probably be based on this, and patch 3 should make that selection a little easier. Changes since v1: - sort out the dependency mess in RISCV - don't even built non-coherent DMA support for coldfire cores without data caches - apply the fec workarounds to all coldfire platforms with data caches - add a trivial cleanup for m68k dma.c
