This clarifies how 'ranges' properties are used, and in particular,
how to get an identity mapping.
Signed-off-by: NStephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: NDavid Gibson <david@gibson.dropbear.id.au>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NPaul Mackerras <paulus@samba.org>