sparc: Use DT node full_name instead of name for resources

The device_node.name pointer is going to be removed. As the
device_node.full_name is now just the name+unit-address instead of the
full path, use the full_name pointer instead. This will add the
unit-address if there is one to the resource name.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>