Allow getting xstatus without getting status first

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Add container_of macro

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Add experimental LBP3010 support

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>