cpuat91: unbreak ethernet

* the following problems are met :
config was set to use the new driver as a default but
- RMII was not enabled for the new driver
- the new driver didn't compile with RMII enabled
- the new driver initialize a PHY at address O when the PHY of
this board is at 1 thus we get "AT91 EMAC RMII: No PHY present"

* to fix these problems, this patch :
- enable RMII for the new driver
- fix the wrong define used in the at91_emac.c
- allow the config file to set a default phy address (and use
0 as a default as in the actual at91_emac.c driver)

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/include/configs/cpuat91.h b/include/configs/cpuat91.h
index b4fda76..049298c 100644
--- a/include/configs/cpuat91.h
+++ b/include/configs/cpuat91.h
@@ -131,15 +131,12 @@
 	(CONFIG_SYS_MEMTEST_START + PHYS_SDRAM_SIZE - 512 * 1024)
 
 #define CONFIG_NET_MULTI		1
-#ifdef CONFIG_NET_MULTI
 #define CONFIG_DRIVER_AT91EMAC		1
 #define CONFIG_SYS_RX_ETH_BUFFER	8
-#else
-#define CONFIG_DRIVER_ETHER		1
-#endif
+#define CONFIG_RMII			1
+#define CONFIG_MII			1
+#define CONFIG_DRIVER_AT91EMAC_PHYADDR	1
 #define CONFIG_NET_RETRY_COUNT			20
-#define CONFIG_AT91C_USE_RMII			1
-#define CONFIG_PHY_ADDRESS			(1 << 5)
 #define CONFIG_KS8721_PHY			1
 
 #define CONFIG_SYS_FLASH_CFI			1