arm, at91: add siemens corvus board

enable support for the siemens AT91SAM9G20 based board corvus.

Signed-off-by: Boris Schmidt <boris.schmidt@siemens.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/boards.cfg b/boards.cfg
index 96ba30b..1ed8f07 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -140,6 +140,7 @@
 Active  arm         arm926ejs      at91        taskit          stamp9g20           portuxg20                            stamp9g20:AT91SAM9G20,PORTUXG20                                                                                                   Markus Hubig <mhubig@imko.de>
 Active  arm         arm926ejs      at91        taskit          stamp9g20           stamp9g20                            stamp9g20:AT91SAM9G20                                                                                                             Markus Hubig <mhubig@imko.de>
 Active  arm         arm926ejs      at91        siemens         taurus              axm                                  taurus:AT91SAM9G20,MACH_TYPE=2068,BOARD_AXM                                                                                       Heiko Schocher <hs@denx.de>
+Active  arm         arm926ejs      at91        siemens         corvus              corvus                               corvus:AT91SAM9M10G45,SYS_USE_NANDFLASH                                                                                           Heiko Schocher <hs@denx.de>
 Active  arm         arm926ejs      at91        siemens         taurus              taurus                               taurus:AT91SAM9G20,MACH_TYPE=2067,BOARD_TAURUS                                                                                    Heiko Schocher <hs@denx.de>
 Active  arm         arm926ejs      davinci     ait             cam_enc_4xx         cam_enc_4xx                          cam_enc_4xx                                                                                                                       Heiko Schocher <hs@denx.de>
 Active  arm         arm926ejs      davinci     Barix           ipam390             ipam390                              -                                                                                                                                 Heiko Schocher <hs@denx.de>