78a2d25433
- We don't need to fall back to uncacheable memory to satisfy BUS_DMA_COHERENT requests on these CPUs. - The bus_dmamap_sync() is a no-op for these CPUs. A side-effect of this change is rename DMAMAP_COHERENT flag to DMAMAP_UNCACHEABLE. This conveys the purpose of the flag more accurately. Reviewed by: gonzo, imp