arm/km: add support for km_kirkwood_128m16 board

The board is similar to the standard km_kirkwood board. From a
u-boot point of view, the only difference is an increased
256 MiB DRAM (128M16). A board based on this design is for
example the SUP12.

Signed-off-by: Karlheinz Jerg <karlheinz.jerg@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
diff --git a/boards.cfg b/boards.cfg
index 9949bb5..01ff5b5 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -171,6 +171,7 @@
 Active  arm         arm926ejs      kirkwood    karo            tk71                tk71                                 -                                                                                                                                 -
 Active  arm         arm926ejs      kirkwood    keymile         km_arm              km_kirkwood                          km_kirkwood:KM_KIRKWOOD                                                                                                           Valentin Longchamp <valentin.longchamp@keymile.com>
 Active  arm         arm926ejs      kirkwood    keymile         km_arm              km_kirkwood_pci                      km_kirkwood:KM_KIRKWOOD_PCI                                                                                                       Valentin Longchamp <valentin.longchamp@keymile.com>
+Active  arm         arm926ejs      kirkwood    keymile         km_arm              km_kirkwood_128m16                   km_kirkwood:KM_KIRKWOOD_128M16                                                                                                    Valentin Longchamp <valentin.longchamp@keymile.com>
 Active  arm         arm926ejs      kirkwood    keymile         km_arm              kmcoge5un                            km_kirkwood:KM_COGE5UN                                                                                                            Valentin Longchamp <valentin.longchamp@keymile.com>
 Active  arm         arm926ejs      kirkwood    keymile         km_arm              kmnusa                               km_kirkwood:KM_NUSA                                                                                                               Valentin Longchamp <valentin.longchamp@keymile.com>
 Active  arm         arm926ejs      kirkwood    keymile         km_arm              kmsuv31                              km_kirkwood:KM_SUV31                                                                                                              Valentin Longchamp <valentin.longchamp@keymile.com>