- Implement tree structure for devices ...

- Use device tree structure to implement partitions
- Let devinfo print a nice tree
- Introduce 'fixed' partitions which are not removable
- Fix mount: It was not possible to mount on a relative path.

move environment to offset 0x20000 in flash

fix memory size of ipe337 board

whitespace cleanup

add missing include

add support for the PII bf561 board