linux-imx

sparc: iounmap() and *_free_coherent() - Use lookup_resource()

Replace a custom implementation (which doesn't lock the resource tree) by a
call to lookup_resource()

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: David S. Miller <davem@davemloft.net>