uboot-phytec

powerpc/mpc8572ds: Enable bank interleaving to cs0+cs1 for dual-rank DIMMs

The controller interleaving only takes the usable memory mapped to cs0. In
the case of bank interleaving not enabled, only half of dual-rank DIMM will
be used.

For single-rank DIMM bank interleaving will be auto disabled.

Signed-off-by: Jia Hongtao <B38951@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>