[U-Boot] mpc8308rdb generic board support

[Sinan Akman]

   Hi Ilya

> MPC8308RDB BOARD
> M:      Ilya Yanok <yanok at emcraft.com>
> S:      Maintained
> F:      board/freescale/mpc8308rdb/
> F:      include/configs/MPC8308RDB.h
> F:      configs/MPC8308RDB_defconfig

   I am not sure what is your more uptodate
e-mail but I noticed generic board support
is not added to this board :

> make MPC8308RDB_defconfig
> [...]
> ===================== WARNING ======================
> Please convert this board to generic board.

   I don't know if you are still maintaining
this board but I am planning to order this
board and keep an eye on it. Before this
happens though it may get removed.

   If you still access to this board you can
perhaps quickly enable the generic board support
and once my board arrives I can help to keep an
eye on the board further.

   Thanks
   Sinan Akman