Remove completely bogus alignment check -- it's the physical address that

needs to be aligned, not the virtual, and it doesn't seem worth the cost
of a vtophys() call just to see if kmem_alloc_contig() works properly.

sys/arm/arm/busdma_machdep-v6.c

@@ -721,8 +721,6 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
 		free(*mapp, M_DEVBUF);
 		*mapp = NULL;
 		return (ENOMEM);
-	} else if ((uintptr_t)*vaddr & (dmat->alignment - 1)) {
-		printf("bus_dmamem_alloc failed to align memory properly.\n");
 	}
 	dmat->map_count++;