Todo list for devicetree:
  
  === General structure ===
  - Switch from custom lists to (h)list_head for nodes and properties structure

  
  === CONFIG_OF_DYNAMIC ===
  - Switch to RCU for tree updates and get rid of global spinlock
  - Document node lifecycle for CONFIG_OF_DYNAMIC
  - Always set ->full_name at of_attach_node() time
  - pseries: Get rid of open-coded tree modification from arch/powerpc/platforms/pseries/dlpar.c