By moving the two JP12 jumpers 90 degrees, and switching the
setting of SW2.8, the sbc8548 can be configured to boot off
the alternate 64MB SODIMM, which when populated with u-boot
can be a handy recovery option, in case the u-boot in the
8MB soldered on flash gets corrupted.  Here we add an alternate
dts file to match that configuration.

To better highlight the differences, the output from the u-boot
"fli" command is shown for the normal configuration and then
the alternate configuration.

Normal:
 -----------------------
Bank # 1: CFI conformant flash (8 x 8)  Size: 8 MB in 64 Sectors
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x17
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 2 ms, buffer size: 32 bytes

  Sector Start Addresses:
  FF800000 E      FF820000 E      FF840000 E      FF860000 E      FF880000 E
 [...]
  FFEE0000 E      FFF00000 E      FFF20000 E      FFF40000 E      FFF60000 E
  FFF80000        FFFA0000   RO   FFFC0000   RO   FFFE0000   RO

Bank # 2: CFI conformant flash (32 x 8)  Size: 64 MB in 128 Sectors
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x18
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 2 ms, buffer size: 32 bytes

  Sector Start Addresses:
  EC000000 E      EC080000 E      EC100000 E      EC180000 E      EC200000 E
 [...]
  EFC00000 E      EFC80000 E      EFD00000 E      EFD80000 E      EFE00000 E
  EFE80000 E      EFF00000        EFF80000
 -----------------------

Alternate:
 -----------------------
Bank # 1: CFI conformant flash (32 x 8)  Size: 64 MB in 128 Sectors
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x18
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 2 ms, buffer size: 32 bytes

  Sector Start Addresses:
  FC000000 E      FC080000 E      FC100000 E      FC180000 E      FC200000 E
 [...]
  FFC00000 E      FFC80000 E      FFD00000 E      FFD80000 E      FFE00000 E
  FFE80000 E      FFF00000   RO   FFF80000   RO

Bank # 2: CFI conformant flash (8 x 8)  Size: 8 MB in 64 Sectors
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x17
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 2 ms, buffer size: 32 bytes

  Sector Start Addresses:
  EF800000 E      EF820000 E      EF840000 E      EF860000 E      EF880000 E
 [...]
  EFEE0000 E      EFF00000 E      EFF20000 E      EFF40000 E      EFF60000 E
  EFF80000 E      EFFA0000        EFFC0000        EFFE0000
 -----------------------
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>