Fix encode/decode-unit to use a full 64-bit @xxxx value

Currently, for devices with a 2 cells address, we always use the
form @hi,lo which doesn't match what pseries OFW does and is generally
awkward. This changes things to use a single 64-bit number instead

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
1 file changed