Renamed the MPC8568 MDS platform code to follow other 85xx boards.  There
isn't anything specific about the 8568 MDS code that wouldn't apply to another
85xx MDS system at this point.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Cleaned up the probing functionality to be more consistent across all 85xx
boards and actually check to see if we should be running on a given board.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Signed-off-by: NJon Loeliger <jdl@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Add support for the MPC8568 MDS reference board
Signed-off-by: NAndrew Fleming <afleming@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>