net: add Calxeda xgmac driver

This adds ethernet driver for Calxeda xgmac found on Highbank SOC.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>

Fix: WARNING: __aligned(size) is preferred over
__attribute__((aligned(size)))
Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/netdev.h b/include/netdev.h
index 150fa8e..b0c21d5 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -48,6 +48,7 @@
 int au1x00_enet_initialize(bd_t*);
 int ax88180_initialize(bd_t *bis);
 int bfin_EMAC_initialize(bd_t *bis);
+int calxedaxgmac_initialize(u32 id, ulong base_addr);
 int cs8900_initialize(u8 dev_num, int base_addr);
 int davinci_emac_initialize(void);
 int dc21x4x_initialize(bd_t *bis);