The DDR controller is slightly different in ECX-2000 and ECX-1000, so we
need to have different nodes for each platform.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
[Device Tree documentation updated.]
Signed-off-by: NRobert Richter <rric@kernel.org>

Add support for memory controller on Calxeda Highbank platforms. Highbank
platforms support a single 4GB mini-DIMM with 1-bit correction and 2-bit
detection.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>