86xx: Support 2GB DIMMs

Configure the number of bits used to address the banks inside the SDRAM
device.  The default register value of 0 means 2 bits to address 4 banks.
Higher capacity devices like a 2GB DIMM require 3 bits to address 8 banks.

Signed-off-by: Becky Bruce <bgill@freescale.com>
1 file changed