sparc: use DT node full_name in sparc_dma_alloc_resource

The sparc tree already has this change for the pre-refactored code,
but pulling it into the dma-mapping tree like this should ease
the merge conflicts a bit.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: David Miller <davem@davemloft.net>

arch/sparc/kernel/ioport.c

@@ -252,7 +252,7 @@ unsigned long sparc_dma_alloc_resource(struct device *dev, size_t len)
 	res = kzalloc(sizeof(*res), GFP_KERNEL);
 	if (!res)
 		return 0;
-	res->name = dev->of_node->name;
+	res->name = dev->of_node->full_name;
 
 	if (allocate_resource(&_sparc_dvma, res, len, _sparc_dvma.start,
 			      _sparc_dvma.end, PAGE_SIZE, NULL, NULL) != 0) {